Dell OptiPlex 5055 Ryzen CPU Tower OptiPlex 5055 Tower Owners Manual
Dell OptiPlex 5055 Ryzen CPU Tower Manual
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- Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 1
Dell OptiPlex 5055 Tower Owner's Manual Regulatory Model: D18M Regulatory Type: D18M004 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 2
on your computer...5 Safety instructions...5 Turning off your computer...5 Turning off your - Windows...5 Before working inside your computer...6 After working inside your computer...6 2 Chassis overview...7 Front chassis view...7 Back chassis view...8 3 Field service information...9 Screw size list - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 3
BIOS in Linux and Ubuntu environments 66 Flashing the BIOS from the F12 One-Time boot menu 66 6 Technical Specifications...70 7 Troubleshooting...75 Diagnostic and Power LED codes...75 Enhanced Pre-Boot System Assessment - ePSA diagnostics 79 8 Getting help...80 Contacting Dell...80 Contents - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 4
use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 5
only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 6
Before working inside your computer To avoid damaging your computer, perform the following steps before you begin working inside the computer. 1. Ensure that you follow the safety precautions. 2. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched. 3. - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 7
Front chassis view 2 Chassis overview 1. Power button and power light 3. Memory card reader (optional) 5. Headset port 7. USB 2.0 port 2. Hard drive activity light 4. Optical drive (optional) 6. USB 2.0 port with PowerShare 8. USB 3.1 Gen1 port Chassis overview 7 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 8
Back chassis view 1. Line-out port 3. PS/2 keyboard port 5. USB 2.0 ports (supports Smart Power On) 7. Power connector port 9. Padlock ring 11. Network port 13. Release latch 2. Serial port 4. USB 3.1 Gen1 port 6. Expansion card slots 8. Power supply diagnostic - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 9
3 Field service information This chapter details the safety precautions that must be taken before disassembling the systems. It also lists the detailed disassembly and assembly instructions along with related information such as screw list and tool requirements. Topics: • Screw size list • - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 10
TPM version in the BIOS under the Security option, as shown below: System Board Configuration NOTE: After replacing the system board, please follow these instructions carefully to ensure the new system board is configured correctly 1. Press F12 to get one time boot menu and select BIOS set up. 10 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 11
2. Click on Maintenance tab. 3. Click the service tag. 4. Enter the service tag and press enter. NOTE: Once you exit setup and save changes you will not be allowed to modify the Service Tag. Field service information 11 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 12
5. Select the option Yes to save the changes. 6. Click on maintenance to verify Service Tag on the machine. 12 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 13
another system board will need to be dispatched and replaced. Enabling data wipe option in BIOS After replacing the system board and successfully setting the service tag, the system will reboot. If the technician enters the BIOS at this point, the Data Wipe option will not be available. To re-enable - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 14
only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 15
primary steps to be taken before performing any disassembly instructions. Observe the following safety precautions before you perform to the same electrical potential. This is done through the use of a field service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 16
may not be obvious, such as intermittent problems or a shortened product life span. As more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or and the hardware is known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 17
parts separate from all insulator parts while performing service and that they use anti-static bags for apart for a 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 your legs - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 18
3. Lift the side cover to remove it from the computer. 18 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 19
bezel away from the chassis [2]. NOTE: Please ensure that the tabs at the bottom of the bezel is also released before lifting the bezel. Field service information 19 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 20
4. Lift the front bezel to remove it from the computer. 20 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 21
a limited extent. See the printed image on the front panel door for the maximum permissible level. 3. Pull the front panel door to open it. Field service information 21 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 22
the: a) Side Cover b) Front bezel 3. To remove hard drive assembly: a) Disconnect the hard drive assembly cables from the connectors on the hard drive. 22 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 23
NOTE: Un-route the cables from the clips from the drive cage. b) Open the front panel door. c) Remove the HDD filler bracket. Field service information 23 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 24
d) Press the blue tab [1] and pull the hard drive assembly out of the computer [2]. 24 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 25
to disengage the pins on the bracket from the slots on the hard drive [1]. b) Lift the hard drive out of the hard drive bracket [2]. Field service information 25 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 26
their respective connectors on the hard drive [1]. b) Press the blue tabs on both sides [2] and pull the drive assembly out of the computer [3]. 26 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 27
drive bracket to disengage the pins on the bracket from the slots on the hard drive [1]. b) Lift the drive out of the drive bracket [2]. Field service information 27 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 28
cables from the tabs under the drive cage to allow you to disconnect the cables from the connectors. b) Close the front panel door [2]. 28 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 29
c) Press the blue release tab [1] and slide the optical drive out of the computer [2]. Field service information 29 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 30
blue plastic tab that secures the M.2 PCIe SSD to the system board [1]. b) Slide the M.2 PCIe SSD from the connector on the system board [2]. 30 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 31
3. Open the Front panel door. 4. To remove the SD card reader: a) Disconnect the SD card reader cable from the connector on the system board [1]. Field service information 31 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 32
6. Follow the procedure in After working inside your computer. Memory modules Removing memory module 1. Follow the procedure in Before working inside your computer. 32 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 33
release tab [2] and lift the PCIe expansion card out of the computer [3]. NOTE: The release tab is at the base of the expansion card. Field service information 33 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 34
the release latch. 5. Close the front panel door. 6. Install the: a) Front bezel b) Side Cover 7. Follow the procedure in After working inside your computer. 34 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 35
PSU: a) Press the release tab [1]. NOTE: Release tab is at the base of the PSU b) Slide and lift the PSU away from the computer [2]. Field service information 35 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 36
Removing intrusion switch 1. Follow the procedure in Before working inside your computer. 2. Remove the: a) Side Cover b) Front bezel 3. Open the Front panel door. 36 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 37
the procedure in After working inside your computer. Power switch Removing power switch 1. Follow the procedure in Before working inside your computer. 2. Remove the: Field service information 37 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 38
the power switch out from the front of the computer [3]. d) Close the front panel door [4]. 5. Pull the power switch out from the computer. 38 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 39
the front panel door. 4. To remove the speaker: a) Disconnect the speaker cable from the connector on the system board [1]. b) Close the front panel door [2]. Field service information 39 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 40
c) Press the release tabs [1], and slide the speaker module [2] out of the slot. 40 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 41
the Front panel door. 4. To remove the coin cell battery: a) Using a plastic scribe press the release latch until the coin cell battery pops out [1]. Field service information 41 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 42
heat sink assembly 1. Follow the procedure in Before working inside your computer. 2. Remove the: a) Side Cover b) Front bezel 3. Open the Front panel door. 42 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 43
on the system board. 5. Close the front panel door. 6. Install the: a) Front bezel b) Side Cover 7. Follow the procedure in After working inside your computer. Field service information 43 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 44
socket keys. CAUTION: Do not use force to seat the processor. When the processor is positioned correctly, it engages easily into the socket. 44 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 45
. c) Stretch the grommets securing the fan to the computer to ease the removal of the fan [2]. d) Slide the system fan out of the computer [3]. Field service information 45 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 46
the procedure in After working inside your computer. System board Removing the system board 1. Follow the procedure in Before working inside your computer. 46 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 47
the following cables from the system board: a) PSU [1] b) power switch [2] c) speaker [3] d) PSU [4] e) power distribution for optical drive and hard drive [5] f) system fan [6] g) intrusion switch [7] Field service information 47 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 48
7. To remove the system board: a) Remove the screws (6+/-1) that secure the system board to the computer 48 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 49
b) Slide and lift the system board away from the computer [2]. Field service information 49 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 50
with an adhesive tape. 7. Connect the system fan cable to the connector on the system board. 8. Close the front panel door. 9. Install the: 50 Field service information - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 51
(White Color) 18. SATA 3 Connector (Black Color) 20. HDD_ODD_Power Cable Connector (SATA PWR) 22. SATA 0 Connector (Blue color) 24. CMOS_CLR/Password/Service_Mode Jumper (JMP1) Field service information 51 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 52
4 Technology and components This chapter details the technology and components available in the system. Topics: • Systems management features • In-Band Systems Management - Dell Client Command Suite • Out-of-Band Systems Management - DASH • AMD APUs, AMD Ryzen CPUs and APUs • AMD PT B350 • AMD - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 53
services management for desktop and mobile client systems. Through DASH, DMTF provides the next generation of standards for secure out-of-band and remote management of desktop and mobile systems. OptiPlex 5055 with DASH 1.2 on BCM5762 supports per core, increasing the Instruction Per Cycle(IPC) thus - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 54
Specifications The following table contains the key specifications of the AMD Radeon R7 M450: Table 4. Key Specifications Specification Product Line API Supported Clock Speed Bus Width Memory Clock Speed Technology Max External Resolution Interface Type AMD Radeon R7 M450 AMD DirectX 12 , OpenCL - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 55
bus power and increased device current draw to better accommodate power-hungry devices • New power management features • Full-duplex data transfers and support for new transfer types • Backward USB 2.0 compatibility • New connectors and cable The topics below cover some of the most commonly asked - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 56
present on USB 3.1 Gen 1 cables and only come into contact when connected to a proper SuperSpeed USB connection. Windows 8/10 will be bringing native support for USB 3.1 Gen 1 controllers. This is in contrast to previous versions of Windows, which continue to require separate drivers for USB 3.1 Gen - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 57
, perhaps not on its immediate release, but in a subsequent Service Pack or update. It is not out of the question to think that following a successful release of USB 3.1 Gen 1 support in Windows 7, SuperSpeed support would trickle down to Vista. Microsoft has confirmed this by stating that most - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 58
on the system display the new ON-FLASH-FLASH or ON-FLASH-ON failure code. If all memory fails, the LCD does not turn on. Troubleshoot for possible memory failure by trying known good memory modules in the memory connectors on the bottom of the system or under the keyboard, as - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 59
System Information Description Displays the following information: • System Information: Displays BIOS Version, Service Tag, Asset Tag, Ownership Tag, Ownership Date, Manufacture Date, Express Service Code and the Singed Firmware Update. • Memory Information: Displays Memory Installed, Memory - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 60
mode of the integrated hard drive controller. • Disabled = The SATA controllers are hidden • AHCI (Enabled by default) • RAID ON = SATA is configured to support RAID mode (Disabled by default) Drives Allows you to enable or disable the various drives on-board: • SATA-0 (enabled by default) • SATA - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 61
system startup. The Enable Smart Reporting option is disabled by default. Allows you to enable or disable the integrated USB controller for: • Enable Boot Support • Enable Front USB Ports • Enable Rear USB Ports All the options are enabled by default. This option allows you to charge the external - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 62
UEFI capsule update packages. This option is selected by default. Disabling this option will block BIOS updates from services such as Microsoft Windows Update and Linux Vendor Firmware Service (LVFS) Allows you to control whether the Trusted Platform Module (TPM) is visible to the operating system - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 63
maximum speed. This option is disabled by default. USB Wake Support Allows you to enable the USB devices to wake the computer from standby mode. The option "Enable USB Wake Support" is selected by default Wake on LAN/WWAN This option allows the computer - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 64
seconds This options is disabled by default. Table 15. Virtualization Support Option Description AMD-V Technology This option is enabled by default. 16. Maintenance Option Service Tag Asset Tag SERR Messages BIOS Downgrade Data Wipe BIOS recovery Description Displays the Service Tag of your - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 65
the system BIOS, and then re enabled after the BIOS update is completed. 1. Restart the computer. 2. Go to Dell.com/support. • Enter the Service Tag or Express Service Code and click Submit. • Click Detect Product and follow the instructions on screen. 3. If you are unable to detect or find the - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 66
BIOS in Linux and Ubuntu environments If you want to update the system BIOS in a Linux environment, such as Ubuntu, see https://www.dell.com/support/article/sln171755/. Flashing the BIOS from the F12 One-Time boot menu Updating your system BIOS using a BIOS update .exe file copied to a FAT32 USB - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 67
3. The Bios flash menu will open then click the Flash from file. 4. Select external USB device System setup 67 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 68
5. Once the file is selected, Double click the flash target file, then press submit . 6. Click the Update BIOS then system will reboot to flash the BIOS. 68 System setup - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 69
7. Once complete, the system will reboot and the BIOS update process is completed. System setup 69 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 70
QC2/ L2 Cache: 2 MB/4T / 3.5 GHz / 65 W) • [1] : Octa Core • [2] : Quad Core • [3] : Dual Core NOTE: Extended Frequency (XFR) in GHz are not supported on OptiPlex 5055. Memory Table 22. Memory Specifications Feature Memory type Memory speed Memory connectors Memory capacity Minimum memory Maximum - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 71
2x2 • Intel Wireless-AC 3165 1x1 • Bluetooth 4.1 NOTE: For optimal performance, it is recommended to use the wireless display feature with an access point that supports 5 GHz standard. Technical Specifications 71 - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 72
• Line out connector RJ-45 connector PS2 and serial connector • Front - 2 • Back - 2 • Internal -2 • Front - 2 • Back - 4 • Internal -0 No onboard video ports, supported with add on PCIe graphics cards NOTE: Available video connectors may vary based on the optional graphic board selected. Controls - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 73
Feature Specification Network activity light on integrated network adapter Yellow light - A breathing yellow light indicates that network activity is present. Power supply diagnostic light Green light - The power supply is turned On and is functional. The power cable must be connected to the - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 74
Feature Operating Non-Operating Airborne contaminant level Specification -15.2 m to 30482000 m (-50 to 10,0006560 ft) -15.20 m to 10,668 m (-50 ft to 35,000 ft) G1 or lower as defined by ANSI/ISA-S71.04-1985 74 Technical Specifications - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 75
amber Slow Blinking white light Steady white Possible cause The computer is either turned off or is not receiving power or in Hibernation mode. Troubleshooting steps • Re-seat the power cable in the power connector on the back of the computer and the electrical outlet. • If the computer is - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 76
blink > long pause > repeats Problem Description Bad Motherboard Suggested Resolution Replace the motherboard - - 2 blinks > short pause > Bad Motherboard, Power If customer can assist to 2 blinks > long pause > repeats Supply or Power Supply cabling troubleshoot, narrow down the issue with - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 77
blinks > short pause > 3 blinks > long pause > repeats Problem Description PCIe Device or Video subsystem failures Video Subsystem failure No Memory progress or PCIe device failure was detected. If customer can assist to troubleshoot, narrow down the issue by reseating PCIe card and removing one - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 78
repeats 3 blinks > short pause > 6 blinks > long pause > repeats Problem Description Suggested Resolution Storage Subsystem failure Possible storage device configuration in progress or storage subsystem failure. If customer can assist to troubleshoot, narrow down the issue by removing one by one - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 79
> long pause > repeats Problem Description Possible memory failure Suggested Resolution Memory subsystem configuration activity is in progress. Memory modules have been detected but appear to be incompatible or in an invalid configuration. If customer can assist to troubleshoot, narrow down the - Dell OptiPlex 5055 Ryzen CPU Tower | OptiPlex 5055 Tower Owners Manual - Page 80
may not be available in your area. To contact Dell for sales, technical support, or customer service issues: 1. Go to Dell.com/support. 2. Select your support category. 3. Verify your country or region in the Choose a Country/Region drop-down list at the bottom of the page. 4. Select the appropriate
Dell OptiPlex 5055 Tower
Owner's Manual
Regulatory Model: D18M
Regulatory Type: D18M004