Dell OptiPlex Tower Plus 7020 Owners Manual

Dell OptiPlex Tower Plus 7020 Manual

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  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 1
    OptiPlex Tower Plus 7020 Owner's Manual Regulatory Model: D31M Regulatory Type: D31M001 February 2024 Rev. A00
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 2
    and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2024 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 3
    OptiPlex Tower Plus 7020 7 Front...7 Back...8 Chapter 2: Set up your OptiPlex Tower Plus 7020 11 Chapter 3: Specifications of OptiPlex Tower Plus 7020 instructions...30 Before working inside your computer...30 Safety precautions...31 Electrostatic discharge-ESD protection...31 ESD Field Service
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    Recommended tools...33 Screw list...34 Major components of OptiPlex Tower Plus 7020...35 Chapter 5: Removing and installing side cover 37 Removing the side cover...37 Installing the side cover...38 Chapter 6: Removing and installing coin-cell battery
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    Installing the intrusion switch...87 Chapter 8: Removing and installing Field Replaceable Units (FRUs 88 Power button...88 Removing the power button...88 Installing the power button...89 Wireless antenna kit...90 Internal antenna module...90 External SMA antenna module...94 Processor fan and heat-
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    system setup password 153 Clearing CMOS settings...154 Clearing BIOS (System Setup) and System passwords 154 Chapter 11: Troubleshooting...155 Dell SupportAssist Pre-boot System Performance Check diagnostics 155 Running the SupportAssist Pre-Boot System Performance Check 155 Power-Supply Unit
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    Front 1 Views of OptiPlex Tower Plus 7020 Figure 1. Front view 1. Slim optical drive (optional) Reads from and writes to CDs and DVDs. 2. Power button with state. 3. SD-card slot (optional) Reads from and writes to the SD card. 4. Hard-drive activity light Views of OptiPlex Tower Plus 7020 7
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    transfer speeds of up to 20 Gbps. NOTE: This port does not support video/audio streaming. 9. USB 3.2 Gen 2 (10 Gbps) port Connect devices such as external storage devices and printers. Provides data transfer speeds of up to 10 Gbps. Back Figure 2. Back view 8 Views of OptiPlex Tower Plus 7020
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    10 Gbps. Maximum resolution supported up to 5120 x 3200 @ 60 Hz with a Type-C to DisplayPort adapter. 13. Padlock ring Attach a standard padlock to prevent unauthorized access to the interior of your system. 14. Serial port (optional) Connect serial I/O devices. Views of OptiPlex Tower Plus 7020 9
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 10
    Slide the latch to the unlock position to release the side cover. 16. Service Tag label The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in your system and access warranty information. 10 Views of OptiPlex Tower Plus 7020
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    2 Set up your OptiPlex Tower Plus 7020 Steps 1. Connect the keyboard and mouse. Figure 3. Connect the keyboard and the mouse 2. Connect to your network using a cable, or connect to a wireless network. Set up your OptiPlex Tower Plus 7020 11
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    Figure 4. Connect to your network using a cable, or connect to a wireless network 3. Connect the display. 12 Set up your OptiPlex Tower Plus 7020
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    Figure 5. Connect the display 4. Connect the power cable. Set up your OptiPlex Tower Plus 7020 13
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    Figure 6. Connect the power cable 5. Press the power button. 14 Set up your OptiPlex Tower Plus 7020
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    at www.dell.com/support. For Windows: Follow the on-screen instructions to complete the setup. When setting up, Dell Technologies Support and Protection screen, enter your contact details. 7. Locate and use Dell apps from the Windows Start menu-Recommended Set up your OptiPlex Tower Plus 7020
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    at www.dell.com/support. Dell Digital Delivery Download software applications, which are purchased but not preinstalled on your computer. For more information about using Dell Digital Delivery, search in the Knowledge Base Resource at www.dell.com/support. 16 Set up your OptiPlex Tower Plus 7020
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    kg (13.07 lb) ● Maximum: 9.63 kg (21.24 lb) Processor The following table lists the details of the processors that are supported by your OptiPlex Tower Plus 7020. Table 3. Processor Description Option one Processor type 14th Gen Intel Core i3-14100 Option two 14th Gen Intel Core i5-14500 vPro
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    i9 vPro/i9K vPro DRAM bus width 64-bit Flash EPROM 32 MB + 16 MB PCIe bus Up to Gen4 Operating system Your OptiPlex Tower Plus 7020 supports the following operating systems: ● Windows 11 Home ● Windows 11 Pro ● Windows 11 Pro National Education ● Ubuntu Linux 22.04 LTS 18 Specifications of
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 19
    MT/s, UDIMM, quadchannel ● 128 GB: 4 x 32 GB, DDR5, 3600 MT/s, UDIMM, quadchannel Memory matrix The following table lists the memory configurations supported on your OptiPlex Tower Plus 7020. Table 6. Memory matrix Configuration 8 GB DDR5 16 GB DDR5 16 GB DDR5 32 GB DDR5 32 GB DDR5 32 GB DDR5 64
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    The following table lists the external ports of your OptiPlex Tower Plus 7020. Table 7. External ports Description Network port Values One port ● One USB 3.2 Gen 2x2 (20 Gbps) Type-C port NOTE: This port does not support video/audio streaming. ● One USB 3.2 Gen 2 (10 Gbps) port ● One USB 3.2 Gen
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    OptiPlex Tower Plus 7020. Table 8. Internal slots Description M.2 Values ● Three M.2 2230/2280 slots for solid-state drive ● One M.2 2230 slot for WiFi and Bluetooth combo card NOTE: To learn more about the features of different types of M.2 cards, search in the Knowledge Base Resource at www.dell
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    -CCMP ● TKIP Bluetooth wireless card Bluetooth 5.3 Bluetooth 5.3 NOTE: The version of the Bluetooth wireless card may vary depending on the operating system that is installed on your computer. Audio The following table lists the audio specifications of your OptiPlex Tower Plus 7020. Table 11
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    Storage matrix The following table lists the storage configurations supported on your OptiPlex Tower Plus 7020. Table 13. Storage matrix Storage One M.2 as a RAID volume, Dell Technologies recommends drive models that are identical. NOTE: RAID is not supported on Intel Optane configurations. RAID
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    deliver all the benefits of a RAID volume without incurring the additional penalties when one or more drives in the volume are lower performing. OptiPlex Tower Plus 7020 supports RAID with more than one hard drive configuration. Media-card reader The following table lists the media cards that are
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    for graphic card GPU-Integrated The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your OptiPlex Tower Plus 7020. Table 17. GPU-Integrated Controller Memory size Processor Intel UHD Graphics 730 Shared system memory 14th Gen Intel
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    information about using DisplayPort Multi-Stream Transport, see www.dell.com/support. GPU-Discrete The following table lists the specifications of the discrete Graphics Processing Unit (GPU) supported by your OptiPlex Tower Plus 7020. Table 20. GPU-Discrete Controller Memory size Memory type
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    Stream Transport, see www.dell.com/support. Hardware security The following table lists the hardware security of your OptiPlex Tower Plus 7020. Table 23. Hardware security Hardware security Chassis intrusion switch Chassis lock slot support China TPM Specifications of OptiPlex Tower Plus 7020 27
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    specifications of your OptiPlex Tower Plus 7020. Table 24. Environmental Feature Recyclable packaging Vertical orientation packaging support Multi-Pack packaging OptiPlex Tower Plus 7020. Table 25. Regulatory compliance Regulatory compliance Product Safety, EMC and Environmental Datasheets Dell
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    Operating and storage environment This table lists the operating and storage specifications of your OptiPlex Tower Plus 7020. Airborne contaminant level: G1 as defined by ISA-S71.04-1985 Table 26. Computer environment Description Temperature range Operating 10°C to 35°C (50°F to 95°F)
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    and the contacts. CAUTION: You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at
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    performing any disassembly instructions. Observe the in the system board. Standby power Dell products with standby power must be . This is done by using a field service electrostatic discharge (ESD) kit. When connecting not be obvious, such as intermittent problems or a shortened product life span.
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    damage to recognize and troubleshoot is the intermittent (also ESD mat, and the hardware is known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. Never use replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static
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    servicing Dell products. In addition, it is critical to keep sensitive parts separate from all insulator parts while performing service stable base, and point your toes out. 2. Tighten stomach muscles. Abdominal muscles support your spine when you lift, offsetting the force of the load. 3. Lift with
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 34
    ● Phillips screwdriver #0 ● Phillips screwdriver #1 ● Plastic scribe Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, and the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and
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    (optional) System board #6-32 M2 Quantity 2 1 2 Screw image #6-32 7 Major components of OptiPlex Tower Plus 7020 The following image shows the major components of OptiPlex Tower Plus 7020. Figure 8. Major Components of OptiPlex Tower Plus 7020 1. Side cover Working inside your computer 35
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    bezel 12. Computer chassis 13. System fan 14. Internal speaker 15. Intrusion switch 16. Power-supply unit 17. Graphics card NOTE: Dell Technologies provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty
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    5 Removing and installing side cover Removing the side cover Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that you remove the security cable from the security-cable slot, if applicable. About this task The following images indicate the location of the
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    Figure 10. Removing the side cover Steps 1. Slide the release latch downwards to release the side cover from the chassis. 2. Slide the side cover outwards, towards the rear of the computer, and lift the side cover away from the chassis. 3. Place the computer on its side with the side-cover opening
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    Figure 11. Installing the side cover Steps 1. Place the computer in the upright position. NOTE: This step applies only if you have installed any component other than the front bezel. 2. Align the tabs on the side cover with the slots on the chassis. 3. Slide the side cover towards the front of the
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    6 Removing and installing coin-cell battery Removing the coin-cell battery WARNING: This computer contains a coin-cell battery and requires trained technicians for handling guidance. CAUTION: Removing the coin-cell battery will clear the CMOS and will reset BIOS settings. Prerequisites 1. Follow the
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 41
    Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the coin-cell battery and provide a visual representation of the installation procedure. Figure 13. Installing
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    7 Removing and installing Customer Replaceable Units (CRUs) The replaceable components in this chapter are Customer Replaceable Units (CRUs). CAUTION: Customers can replace only the Customer Replaceable Units (CRUs) following the safety precautions and replacement procedures. NOTE: The images in
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 43
    Figure 14. Removing the front bezel Steps 1. Using a plastic scribe, gently pry the tabs sequentially from the top and release the tabs on the front bezel. 2. Rotate the front bezel outward from the chassis and remove the front bezel. Installing the front bezel Prerequisites If you are replacing a
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    Figure 15. Installing the front bezel Steps 1. Align the tabs on the front bezel with the slots on the chassis. 2. Rotate the front bezel towards the chassis and snap it in place. Next steps 1. Install the side cover. 2. Follow the procedure in After working inside your computer. Memory module
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    Figure 16. Removing the memory module Steps 1. Using your fingertips, carefully spread apart the securing-clips on each end of the memory-module slot (DIMM1, DIMM2, DIMM3 or DIMM4, whichever is applicable) . 2. Hold the memory module near the securing clips, and then gently ease the memory module
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    Figure 17. Installing the memory module Steps 1. Ensure that the memory-module securing clips are in an open position. 2. Align the notch on the memory module with the tab on the memory-module slot (DIMM1, DIMM2, DIMM3 or DIMM4, whichever is applicable) . 3. Press down on the memory module until the
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    2. Remove the side cover. About this task The following images indicate the location of the M.2 2230 solid-state drive and provide a visual representation of the removal procedure. Figure 18. Removing the M.2 2230 solid-state drive Steps 1. Remove the screw (M2x3.5) that secures the M.2 2230 solid-
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    Figure 19. Installing the M.2 2230 solid-state drive Figure 20. Installing the M.2 2230 solid-state drive Steps 1. Remove the standoff nut (M2) from the M.2 slot (2280) and place it on the M.2 slot (2230), at half length, on the system board. NOTE: This step applies only if you are replacing a M.2
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    3. At an angle, slide and place the M.2 2230 solid-state drive in the M.2 card slot on the system board. 4. Replace the screw (M2x3.5) to secure the M.2 2230 solid-state drive to the system board. Next steps 1. Install the side cover. 2. Follow the procedure in After working inside your computer.
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    About this task The following images indicate the location of the M.2 2280 solid-state drive and provide a visual representation of the installation procedure. Figure 22. Installing the M.2 2230 solid-state drive Figure 23. Installing the M.2 2280 solid-state drive Steps 1. Remove the standoff nut
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    more information about the installation procedure of external puck antenna for your computer, see OptiPlex Antenna Installation Guide on the documentation support page of OptiPlex Tower Plus 7020. Wireless card Removing the wireless card Prerequisites 1. Follow the procedure in Before working inside
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    Figure 24. Removing the wireless card Steps 1. Remove the screw (M2x3.5) that secures the wireless-card bracket to the system board. 2. Slide and lift the wireless-card bracket off the wireless card. 3. Disconnect the antenna cables from the connectors on the wireless card. 4. Slide and lift the
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    Figure 25. Installing the wireless card Steps 1. Connect the wireless-antenna cables to the wireless card. Table 28. Antenna-cable color scheme Connectors on the wireless card Antenna-cable color Main White Auxiliary Black Silkscreen marking MAIN AUX △ (white triangle) ▲ (black triangle)
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    Graphics Card Removing the graphics card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the graphics card and provide a visual representation of the removal procedure. Figure 26.
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    4. Align and slide the PCIe blanking plate in the slot on the chassis. NOTE: Do not perform this step if you are immediately replacing the graphics card with a new PCIe card. 5. Close the PCIe door and press it gently until it clicks in place on the chassis. NOTE: Do not perform this step if you are
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 56
    Steps 1. Lift the pull tab on the PCIe door outwards to open the PCIe door. 2. Remove the PCIe blanking plate from the slot on the chassis. NOTE: Ensure to keep the PCIe blanking plate safe for future use. 3. Align the notch on the graphics card with the tab on the PCIe card connector (SLOT2) on the
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 57
    Figure 28. Removing the powered graphics card Removing and installing Customer Replaceable Units (CRUs) 57
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    Figure 29. Removing the powered graphics card Steps 1. Lift the pull tab on the PCIe door outwards to open the PCIe door. 2. Disconnect the power cable from the connector on the powered graphics card. 3. Push and hold the tab that secures the powered graphics card to the PCIe card connector (SLOT2)
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    Figure 30. Installing the powered graphics card Removing and installing Customer Replaceable Units (CRUs) 59
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    your computer. Media-card reader Removing the media-card reader CAUTION: The information in this removal section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 60 Removing and installing
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 61
    ) on the system board. Installing the media-card reader CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. Removing and
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    About this task The following images indicate the location of the media-card reader and provide a visual representation of the installation procedure. Figure 33. Installing the media-card reader Steps 1. Connect the media-card reader to the connector (SD CARD) on the system board. 2. Replace the
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    Hard drive 3.5-inch hard drive Removing the 3.5-inch hard drive Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the front bezel. About this task The following images indicate the location of the 3.5-inch hard drive and provide a
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 64
    Figure 35. Removing the 3.5-inch hard drive 64 Removing and installing Customer Replaceable Units (CRUs)
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    Figure 36. Removing the 3.5-inch hard drive Steps 1. Remove the EMI shield from the front side of the chassis. 2. Remove the data and power cables from the retention clip on the disk-drive cage. 3. Remove the screw (M3) that secures the disk-drive cage to the chassis. 4. Push the securing tab to
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    Figure 37. Installing the 3.5-inch hard drive 66 Removing and installing Customer Replaceable Units (CRUs)
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    Figure 38. Installing the 3.5-inch hard drive Removing and installing Customer Replaceable Units (CRUs) 67
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    Figure 39. Installing the 3.5-inch hard drive Steps 1. Align the tabs on the 3.5-inch hard-drive bracket with the slots on the hard drive and place the hard drive in the hard-drive bracket. 2. Snap the hard-drive bracket onto the 3.5-inch hard drive. 3. Align and slide the 3.5-inch hard-drive
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    2. Remove the side cover. 3. Remove the front bezel. About this task The following images indicate the location of the secondary 3.5-inch hard drive and provide a visual representation of the removal procedure. Figure 40. Removing the secondary 3.5-inch hard drive Removing and installing Customer
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    Figure 41. Removing the secondary 3.5-inch hard drive Steps 1. Disconnect the data and power cables from the respective connectors on the secondary hard drive. 2. Remove the data and power cables from the retention clips on the secondary hard-drive assembly. 3. Remove the screw (#6-32) that secures
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    Figure 42. Installing the secondary 3.5-inch hard drive Figure 43. Installing the secondary 3.5-inch hard drive Steps 1. Align and insert the secondary 3.5-inch hard drive into the hard-drive bracket. Removing and installing Customer Replaceable Units (CRUs) 71
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    2. Align the screw holes on the 3.5-inch hard-drive bracket to the holes on the hard drive. 3. Replace the fours screws (#6-32) to secure the secondary 3.5-inch hard-drive to the hard-drive bracket. 4. Align and place the secondary 3.5-inch hard-drive assembly in the hard-drive slot on the chassis.
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    Figure 44. Removing the slim optical drive Removing and installing Customer Replaceable Units (CRUs) 73
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    Figure 45. Removing the slim optical drive 74 Removing and installing Customer Replaceable Units (CRUs)
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    Figure 46. Removing the slim optical drive Steps 1. Remove the EMI shield from the front side of the chassis. 2. Remove the data and power cables from the retention clip on the disk-drive cage. 3. Remove the screw (M3) that secures the disk-drive cage to the chassis. 4. Push the securing tab to
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    Figure 47. Installing the slim optical drive 76 Removing and installing Customer Replaceable Units (CRUs)
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    Figure 48. Installing the slim optical drive Removing and installing Customer Replaceable Units (CRUs) 77
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    Figure 49. Installing the slim optical drive Steps 1. Insert the alignment pins on the slim optical-drive bracket in the slots on the optical drive. 2. Align and slide the slim optical drive in the optical-drive slot on the disk-drive cage. 3. Connect the data and power cables to the respective
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    Internal speaker Removing the internal speaker Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the internal speaker and provide a visual representation of the removal procedure.
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    Figure 51. Installing the internal speaker Steps 1. Press the tab on the internal speaker, align and slide the internal speaker in the slot on the chassis until it snaps in place. NOTE: Ensure that the internal speaker is secured under the tabs on the chassis. 2. Open the retention clip, route the
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    Figure 52. Removing the network card Steps 1. Lift the pull tab on the PCIe door outwards to open the PCIe door. 2. Gently remove the network card from the PCIe card connector (SLOT1) on the system board. 3. Align and slide the PCIe blanking plate in the slot on the chassis. NOTE: Do not perform
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 82
    About this task The following images indicate the location of the network card and provide a visual representation of the installation procedure. Figure 53. Installing the network card Steps 1. Lift the pull tab on the PCIe door outwards to open the PCIe door. 2. Remove the PCIe blanking plate from
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    Removing the serial/parallel port card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the serial/parallel port card and provide a visual representation of the removal procedure.
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    Figure 55. Removing the serial/parallel port card Steps 1. Lift the pull tab on the PCIe door outwards to open the PCIe door. 2. Push and hold the tab that secures the serial/parallel port card to the PCIe card connector (SLOT2) on the system board. 3. Gently lift the serial/parallel port card off
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    Figure 56. Installing the serial/parallel port card Figure 57. Installing the serial/parallel port card Steps 1. Lift the pull tab on the PCIe door outwards to open the PCIe door. 2. Remove the PCIe blanking plate from the slot on the chassis. Removing and installing Customer Replaceable Units (
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    NOTE: Ensure to keep the PCIe blanking plate safe for future use. 3. Align the notch on the serial/parallel port card with the tab on the PCIe card connector (SLOT2) on the system board. 4. Gently press down on the serial/parallel port card till the tab on the PCIe connector locks in place. 5. Close
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    Installing the intrusion switch Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the intrusion switch and provide a visual representation of the installation
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    only. CAUTION: To avoid any potential damage to the component or loss of data, ensure that an authorized service technician replaces the Field Replaceable Units (FRUs). CAUTION: Dell Technologies recommends that this set of repairs, if needed, to be conducted by trained technical repair specialists
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    cable from the computer. Installing the power button CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this
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    inside your computer. Wireless antenna kit Internal antenna module Removing the internal antenna module CAUTION: The information in this removal section is intended for authorized service technicians only. 90 Removing and installing Field Replaceable Units (FRUs)
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    Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the front bezel. 4. Remove the wireless card. About this task The following images indicate the location of the internal antenna module and provide a visual representation of the removal
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    the slot on the chassis. 2. Remove the internal-antenna cable from the routing guides on the chassis. 3. Remove the two screws (M3x3) that secure the internal information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component
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    Figure 64. Installing the internal antenna module Removing and installing Field Replaceable Units (FRUs) 93
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 94
    internal antenna module to the chassis. 4. Route the internal-antenna cable through the routing guide on the chassis. 5. Thread the internal-antenna cable through the slot on the chassis is intended for authorized service technicians only. 94 Removing and installing Field Replaceable Units (FRUs
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    Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the external puck antenna. 4. Remove the wireless card. About this task NOTE: This step applies only to computers shipped with an optional external SMA antenna installed. The following
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 96
    new PCIe card. Installing the external SMA antenna module CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this
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    Figure 68. Installing the external SMA antenna module Figure 69. Installing the external SMA antenna module Removing and installing Field Replaceable Units (FRUs) 97
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    the processor fan and heat-sink assembly (for 65 W processors) CAUTION: The information in this removal section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task WARNING: The
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 99
    processor fan and heat-sink assembly (for 65 W processors) CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 100
    the processor fan and heat-sink assembly (for 125 W processors) CAUTION: The information in this removal section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 100 Removing and installing
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 101
    fan and heat-sink assembly (for 125 W processors) CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. Removing and
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 102
    in After working inside your computer. Power-supply unit Removing the power-supply unit CAUTION: The information in this removal section is intended for authorized service technicians only. 102 Removing and installing Field Replaceable Units (FRUs)
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 103
    Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the processor fan and heat-sink assembly (for 125 W processors). NOTE: This procedure applies only to computers shipped with 125 W processors. About this task The following images
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 104
    unit cables to the chassis. 3. Remove the power-supply unit cables from the routing guides on the chassis. 4. Remove the three screws (#6-32) that secure the power- information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 105
    Figure 76. Installing the power-supply unit Removing and installing Field Replaceable Units (FRUs) 105
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 106
    power-supply unit to the chassis. 4. Route the power-supply unit cables through the routing guides on the chassis. 5. Close the retention clips to secure the power-supply unit cables to is intended for authorized service technicians only. 106 Removing and installing Field Replaceable Units (FRUs)
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 107
    system fan from the chassis. Installing the system fan CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. Removing and
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 108
    About this task The following images indicate the location of the system fan and provide a visual representation of the installation procedure. Figure 79. Installing the system fan Steps 1. Ensure that the rubber gromments are installed in the computer chassis. NOTE: Align and insert the rubber
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 109
    Processor Removing the processor CAUTION: The information in this removal section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the processor fan and heat-sink assembly (for
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 110
    -regulator heat sink Removing the voltage-regulator heat sink CAUTION: The information in this removal section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the processor fan
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 111
    system board. Installing the voltage-regulator heat sink CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 112
    I/O modules Optional serial module Removing the optional serial module CAUTION: The information in this removal section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task The
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 113
    the system board. Installing the optional serial module CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 114
    Figure 85. Installing the optional serial module Steps 1. Using a screwdriver, remove the optional-module cover from the chassis. NOTE: This step is applicable only when the optional serial module is being installed for the first time. NOTE: To remove the optional-module cover, insert a flat-head
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 115
    PS2 and serial module cable from the connector (KB MS SERIAL) on the system board. 3. Remove the PS2 and serial module cable from the routing guides on the chassis. 4. Remove the PS2 and serial module from the chassis. 5. Align and slide the PCIe blanking plate in the slot on the chassis
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 116
    . 3. Align and place the PS2 and serial module in the PCIe slot on the chassis. 4. Route the PS2 and serial module cable through the routing guides on the chassis. 116 Removing and installing Field Replaceable Units (FRUs)
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 117
    your computer. Optional HDMI module Removing the optional HDMI module CAUTION: The information in this removal section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task The
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 118
    Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the optional HDMI module and provide a visual representation of the installation procedure. Figure 89. Installing
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 119
    Optional DisplayPort module Removing the optional DisplayPort module CAUTION: The information in this removal section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task The
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 120
    in After working inside your computer. Optional VGA module Removing the optional VGA module CAUTION: The information in this removal section is intended for authorized service technicians only. 120 Removing and installing Field Replaceable Units (FRUs)
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 121
    off the system board. Installing the optional VGA module CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 122
    working inside your computer. Optional USB Type-C module Removing the optional USB Type-C module CAUTION: The information in this removal section is intended for authorized service technicians only. 122 Removing and installing Field Replaceable Units (FRUs)
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 123
    system board. Installing the optional USB Type-C module CAUTION: The information in this installation section is intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 124
    the procedure in After working inside your computer. System board Removing the system board CAUTION: The information in this removal section is intended for authorized service technicians only. 124 Removing and installing Field Replaceable Units (FRUs)
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 125
    the voltage-regulator heat sink. 18. Remove the optional I/O modules, if applicable. About this task NOTE: The Service Tag of your computer is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board. NOTE: Replacing the system board
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 126
    Figure 96. System board connectors 1. Power-supply unit cable connector (ATX CPU1) 2. Power-supply unit cable connector (ATX CPU2) 3. Memory module connectors (DIMM3, DIMM1, DIMM4, DIMM2) 4. Power-button cable connector (PWR SW) 5. Media-card reader connector (SD CARD) 6. M.2 2230/2280 solid-state
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 127
    Figure 97. Removing the system board Steps 1. Remove the screw (#6-32) that secures the front I/O-bracket to the chassis. 2. Slide and remove the front I/O-bracket from the chassis. 3. Disconnect the following cables from the respective connectors on the system board and remove them from the
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 128
    Figure 98. Removing the system board 4. Lift the pull tab on the PCIe door outwards to open the PCIe door. 5. Remove the seven screws (#6-32) that secure the system board to the chassis. 6. Remove the two M.2 solid-state drive standoff nuts (M2) that secure the system board to the chassis. 128
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 129
    Figure 99. Removing the system board 7. Lift the system board at an angle and remove the system board from the chassis. Figure 100. Removing the system board Removing and installing Field Replaceable Units (FRUs) 129
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 130
    a component, remove the existing component before performing the installation procedure. About this task NOTE: The Service Tag of your computer is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board. NOTE: Replacing the system
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 131
    13. Power-supply unit cable connector (ATX SYS) 14. Internal-speaker cable connector (INT SPKR) 15. Coin-cell battery connector (RTC) 16. Thunderbolt card connector (TBT) 17. PCIe x4 card connector (SLOT4) 18. PCI card connector (SLOT3) 19. PCIe x16 card connector (SLOT2) 20. PCIe x1 card connector
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 132
    Figure 103. Installing the system board 4. Connect the following cables to the respective connectors on the system board and route them through the retention clips on the chassis, if applicable: a. Power-supply unit cables (ATX CPU1, ATX CPU2 and ATX SYS) b. Slim optical drive cable (SATA3) c. Hard
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 133
    Figure 104. Installing the system board 5. Close the PCIe door and press it gently until it clicks in place on the chassis. 6. Align the tabs on the front I/O-bracket with the slots on the chassis. 7. Replace the screw (#6-32) to secure the front I/O-bracket to the chassis. Figure 105. Installing
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 134
    6. Install the external SMA antenna module, if applicable. 7. Install the power button. 8. Install the expansion card, if applicable. 9. Install the 3.5-inch hard drive or the secondary 3.5-inch hard drive, whichever is applicable. 10. Install the media-card reader, if applicable. 11. Install the
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 135
    along with instructions on how to install the drivers. Operating system Your OptiPlex Tower Plus 7020 supports the following operating systems: ● Windows 11 Home ● Windows 11 Pro ● Windows 11 Pro National Education ● Ubuntu Linux 22.04 LTS Drivers and downloads When troubleshooting, downloading, or
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 136
    10 BIOS Setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup. Certain changes can make your computer work incorrectly. NOTE: Depending on the computer and its installed devices, the items that are listed in this section may or may not be displayed.
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 137
    this section may or may not be displayed. Table 31. System setup options-Overview menu Overview OptiPlex Tower Plus 7020 BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer. Asset Tag Displays the Asset Tag of the computer. Manufacture Date
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 138
    Controller Displays the audio controller information of the computer. Bluetooth Device Displays the Bluetooth device information of the computer. LOM MAC Address Displays setup or using management interfaces like Dell Command|Configure, but can only be disabled from BIOS setup. 138 BIOS Setup
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 139
    the Enable Secure Boot option is disabled. For additional security, Dell Technologies recommends keeping the Secure Boot option enabled to ensure that Enable Microsoft UEFI CA option is enabled. For additional security, Dell Technologies recommends keeping the Microsoft UEFI CA option enabled to
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 140
    mode of the integrated storage device controller. By default, the RAID On option is selected. The storage device is configured to support RAID functions with VMD controller. Storage Interface Port Enablement Displays the information of various onboard drives. Enables or disables the individual
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 141
    Device Enable WLAN Enables or disables the internal WLAN device. By default, the WLAN option enabled. Bluetooth Enables or disables the internal Bluetooth device. By default, the Bluetooth option enabled. Enable UEFI Network Stack Enables or disables the UEFI Network Stack and controls the
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 142
    , noise, and temperature. USB Wake Support Enable USB Wake Support When enabled, connecting a USB device Module (TPM) provides various cryptographic services which serve as the cornerstone for option is enabled. For additional security, Dell Technologies recommends keeping Trusted Platform Module
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 143
    default, the SHA-256 option is enabled. For additional security, Dell Technologies recommends keeping the SHA-256 option enabled. Clear When enabled, attached to the memory controller. Up to 16 different encryption keys are supported for use by the operating system/VMM. By default, the Multi-Key
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 144
    . By default, the Start Data Wipe option is disabled. Absolute Absolute Software provides various cyber security solutions, some requiring software preloaded on Dell computers and integrated into the BIOS. To use these features, you must enable the Absolute BIOS setting and contact Absolute for
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 145
    the Esc key is pressed at the System Password prompt. ● The computer password is not prompted when the computer resumes from standby mode. Dell Technologies recommends using the computer password in situations where it is likely that a computer may be lost or stolen. M.2 PCIe SSD-1 The M.2 PCIe
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 146
    an end user to provide their own password. By default, the Allow Non-Admin Password Changes option is enabled. For additional security, Dell Technologies recommends keeping the Allow NonAdmin Password Changes option disabled. Admin Setup Lockout Enable Admin Setup Lockout The Admin Setup Lockout
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 147
    system Recovery Tool. By default, the Dell Auto OS Recovery Threshold value is set to 2. Table 41. System setup options-System Management menu System Management Service Tag Displays the Service Tag of the computer. Asset Tag Creates a computer Asset Tag that can be used by an IT administrator
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 148
    NOTE: This setting controls only the Intel RAID (CTRL+ I), MEBX (CTRL+ P), and LSI RAID (CTRL+ C) Option ROMs. Other preboot Option ROMs, which support entry using a key sequence, are not affected by this setting. Table 43. System setup options-Preboot Behavior menu Preboot Behavior Warnings and
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 149
    setting for IOMMU is disabled (VT-d/AMD Vi). By default, the Enable Pre-Boot DMA Support option is enabled. For additional security, Dell Technologies recommends keeping the Enable PreBoot DMA Support option enabled. NOTE: This option is provided only for compatibility purposes, since some older
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 150
    . Table 45. System setup options-Performance menu Performance Multi-Core Support Multiple Atom Cores Enables to change the number of Atom cores Base Address Register (BAR) Enables or disables the PCIe resizable BAR support. By default, the PCIe Resizable Base Address Register (BAR) option
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 151
    .dell.com/support. 2. Click Product support. In the Search support box, enter the Service Tag of your computer, and then click Search. NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. You can also use the product ID or manually browse
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 152
    can result in data loss or an unnecessary operating system reinstall. For more information about this subject, search in the Knowledge Base Resource at www.dell.com/support. BIOS Update You can run the BIOS update file from Windows using a bootable USB drive or you can also update the BIOS from the
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 153
    CAUTION: The password features provide a basic level of security for the data on your computer. CAUTION: Anyone can access the data that is stored on your computer, when not locked and left unattended. NOTE: System and setup password feature is disabled. Assigning a System Setup password
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 154
    . Clearing BIOS (System Setup) and System passwords About this task To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. NOTE: For information about how to reset Windows or application passwords, see the documentation accompanying Windows or
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 155
    of problems encountered dell.com/support. System-diagnostic lights This section lists the system-diagnostic lights of your OptiPlex Tower Plus 7020. Diagnostic light The power and battery status light indicates the power and battery status of the computer. These are the power states: Troubleshooting
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 156
    and recommended solutions are intended for Dell service technicians to troubleshoot problems. You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 157
    . If problem persists, Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at www.dell
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 158
    troubleshoot and fix problems that may occur with Windows. Dell proposes multiple options for recovering the Windows operating system on your Dell computer. For more information, see Dell provides the instructions on how to conduct a Wi-Fi power cycle: NOTE: Some Internet Service Providers (ISPs
  • Dell OptiPlex Tower Plus 7020 | Owners Manual - Page 159
    your computer through videos, manuals, and documents. Your Dell computer is uniquely identified by a Service Tag or Express Service Code. To view relevant support resources for your Dell computer, enter the Service Tag or Express Service Code at www.dell.com/support. For more information about
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OptiPlex Tower Plus 7020
Owner's Manual
Regulatory Model: D31M
Regulatory Type: D31M001
February 2024
Rev. A00