Dell OptiPlex 5055 A Series Small Form Factor OptiPlex 5055 Small Form Factor - Page 5

DDR4

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49

DDR4 Details

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49

Memory Errors

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50

Active State Power Management

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50

5 System setup

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51

Boot menu

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51

System Setup options

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51

Updating the BIOS in Windows

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57

Updating BIOS on systems with BitLocker enabled

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58

Updating your system BIOS using a USB

ﬂash

drive

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58

Updating the Dell BIOS in Linux and Ubuntu environments

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58

Flashing the BIOS from the F12 One-Time boot menu

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59

Speciﬁcations

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62

6 Troubleshooting

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67

Diagnostic and Power LED codes

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67

Enhanced Pre-Boot System Assessment — ePSA diagnostics

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71

7 Getting help

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72

Contacting Dell

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72

Contents

5

Section	Page
Dell OptiPlex 5055 Small Form Factor Owner's Manual	3
Working on your computer	6
Safety instructions	6
Turning off your computer	6
Turning off your — Windows	6
Before working inside your computer	7
After working inside your computer	7
Chassis	8
Front chassis view	8
Back chassis view	9
Disassembly and reassembly	10
Back cover	10
Removing cover	10
Installing cover	11
Front Bezel	11
Removing the front bezel	11
Installing front bezel	12
Storage device	12
Removing 2.5–inch hard drive assembly	12
Removing 2.5–inch hard drive from the hard drive bracket	14
Installing 2.5–inch hard drive into the hard drive bracket	15
Installing 2.5–inch hard drive assembly	15
Expansion card	15
Removing PCIe expansion card	15
Installing PCIe expansion card	17
Cooling shroud	17
Removing the cooling shroud	17
Installing cooling shroud	19
Coin-cell battery	19
Removing coin cell battery	19
Installing coin cell battery	20
Optical drive	20
Removing optical drive	20
Installing optical drive	22
M.2 PCIe SSD	23
Removing M.2 PCIe SSD	23
Installing M.2 PCIe SSD	24
Heat sink assembly	24
Removing heat sink assembly	24
Installing heat sink assembly	25
Processor	25
Removing the processor	25
Installing the processor	26
Intrusion switch	27
Removing intrusion switch	27
Installing intrusion switch	28
Memory modules	28
Removing memory module	28
Installing memory module	28
VGA Daughterboard	29
Removing the VGA daughter board	29
Installing the VGA daughter board	29
SD card	29
Removing SD card reader	29
Installing SD card reader	30
Power supply unit	30
Removing power supply unit — PSU	30
Installing power supply unit — PSU	33
Power switch	33
Removing power switch	33
Installing power switch	34
Speaker	35
Removing speaker	35
Installing speaker	35
System board	36
Removing the system board	36
Installing the system board	40
System board layout	41
Technology and components	43
Systems management features	43
In-Band Systems Management – Dell Client Command Suite	43
Out-of-Band Systems Management – DASH	44
AMD APUs, AMD Ryzen CPUs and APUs	44
AMD PT B350	45
AMD B350	45
Specification	45
AMD Radeon R7 M450	45
Key Specifications	45
AMD Radeon R5 M430	46
Key Specifications	46
USB features	46
USB 3.1 Gen 1 (SuperSpeed USB)	47
Speed	47
Applications	48
Compatibility	48
DDR4	49
DDR4 Details	49
Memory Errors	50
Active State Power Management	50
System setup	51
Boot menu	51
System Setup options	51
Updating the BIOS in Windows	57
Updating BIOS on systems with BitLocker enabled	58
Updating your system BIOS using a USB flash drive	58
Updating the Dell BIOS in Linux and Ubuntu environments	58
Flashing the BIOS from the F12 One-Time boot menu	59
Specifications	62
Troubleshooting	67
Diagnostic and Power LED codes	67
Enhanced Pre-Boot System Assessment — ePSA diagnostics	71
Getting help	72

Dell OptiPlex 5055 A Series Small Form Factor OptiPlex 5055 Small Form Factor - Page 5

Updating the Dell BIOS in Linux and Ubuntu environments

Page 5 highlights