Dell OptiPlex 5055 Ryzen APU Tower Owners Manual - Page 2

Chapter 1: Working on your computer

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5

Safety instructions

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5

Turning off your computer

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5

Turning off your — Windows

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5

Before working inside your computer

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6

After working inside your computer

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6

Chapter 2: Chassis

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7

Front chassis view

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7

Back chassis view

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8

Chapter 3: Field service information

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9

Screw size list

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9

Recommended tools

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9

Critical callouts

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9

Trusted Platform Module

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9

System Board Configuration

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10

Enabling data wipe option in BIOS

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12

System board jumper setting

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12

LED error code after replacing coin cell battery

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13

Working on your computer

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13

Safety instructions

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13

Turning off your computer

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14

Before working inside your computer

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14

After working inside your computer

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15

Safety precautions

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15

Electrostatic discharge—ESD protection

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15

ESD field service kit

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16

Transporting sensitive components

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17

Disassembly and reassembly

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17

Side Cover

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17

Front Bezel

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19

Front panel door

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21

Installing front panel door

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22

Storage device

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22

Optical drive

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28

M.2 PCIe SSD

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30

SD card

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31

Memory modules

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33

Expansion card

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33

Power supply unit

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35

Intrusion switch

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36

Power switch

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38

Speaker

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39

Contents

2

Contents

Section	Page
Dell OptiPlex 5055 Ryzen APU Tower Owner's Manual	1
Contents	2
Working 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
Chassis	7
Front chassis view	7
Back chassis view	8
Field service information	9
Screw size list	9
Recommended tools	9
Critical callouts	9
Trusted Platform Module	9
System Board Configuration	10
Enabling data wipe option in BIOS	12
System board jumper setting	12
LED error code after replacing coin cell battery	13
Working on your computer	13
Safety instructions	13
Turning off your computer	14
Turning off your — Windows	14
Before working inside your computer	14
After working inside your computer	15
Safety precautions	15
Electrostatic discharge—ESD protection	15
ESD field service kit	16
Transporting sensitive components	17
Disassembly and reassembly	17
Side Cover	17
Removing Side Cover	17
Installing Side cover	19
Front Bezel	19
Removing front bezel	19
Installing front bezel	21
Front panel door	21
Opening the front panel door	21
Installing front panel door	22
Storage device	22
Removing 3.5–inch hard drive assembly	22
Removing 3.5–inch hard drive from the hard drive bracket	25
Installing 3.5–inch hard drive into the hard drive bracket	26
Installing 3.5–inch hard drive assembly	26
Removing 2.5–inch hard drive assembly	26
Removing 2.5–inch hard drive from the hard drive bracket	27
Installing 2.5–inch hard drive into the hard drive bracket	28
Installing 2.5–inch hard drive assembly	28
Optical drive	28
Removing optical drive	28
Installing optical drive	30
M.2 PCIe SSD	30
Removing optional M.2 PCIe SSD	30
Installing optional M.2 PCIe SSD	31
SD card	31
Removing SD card reader	31
Installing SD card reader	32
Memory modules	33
Removing memory module	33
Installing memory module	33
Expansion card	33
Removing PCIe expansion card	33
Installing PCIe expansion card	34
Power supply unit	35
Removing power supply unit – PSU	35
Installing power supply unit – PSU	36
Intrusion switch	36
Removing intrusion switch	36
Installing intrusion switch	37
Power switch	38
Removing power switch	38
Installing power switch	39
Speaker	39
Removing speaker	39
Installing speaker	41
Coin-cell battery	41
Removing coin cell battery	41
Installing coin cell battery	42
Heat sink assembly	42
Removing heat sink assembly	42
Installing heat sink assembly	43
Processor	44
Removing the processor	44
Installing the processor	45
System fan	45
Removing the system fan	45
Installing the system fan	46
VGA Daughterboard	47
Removing the VGA daughter board	47
Installing the VGA daughter board	47
System board	48
Removing the system board	48
Installing the system board	52
System board layout	53
Technology and components	54
Systems management features	54
In-Band Systems Management – Dell Client Command Suite	54
Out-of-Band Systems Management – DASH	55
AMD APUs, AMD Ryzen CPUs and APUs	55
AMD Accelerated Processing Unit - APU	55
AMD Ryzen	55
AMD Ryzen APUs	56
AMD PT B350	56
AMD Radeon R7 M450	56
AMD Radeon R5 M430	57
DDR4	57
USB features	58
Active State Power Management	60
System setup	61
Boot menu	61
System Setup options	62
Updating the BIOS in Windows	67
Flashing the BIOS from the F12 One-Time boot menu	68
Updating BIOS on systems with BitLocker enabled	71
Updating the Dell BIOS in Linux and Ubuntu environments	71
Flashing the BIOS from the F12 One-Time boot menu	71
Technical Specifications	74
Troubleshooting	79
Diagnostic and Power LED codes	79
Enhanced Pre-Boot System Assessment — ePSA diagnostics	83
Getting help	85

Dell OptiPlex 5055 Ryzen APU Tower Owners Manual - Page 2

Contents, M.2 PCIe SSD

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