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Chapter 1: Working inside your computer...................................................................................... 6

Safety instructions.............................................................................................................................................................. 6

Before working inside your computer.......................................................................................................................6

Safety precautions.........................................................................................................................................................7

Electrostatic discharge—ESD protection................................................................................................................7

ESD field service kit ..................................................................................................................................................... 8

Transporting sensitive components.......................................................................................................................... 9

After working inside your computer..........................................................................................................................9

BitLocker..........................................................................................................................................................................9

Chapter 2: Removing and installing components.......................................................................... 10

Recommended tools..........................................................................................................................................................10

Screw list............................................................................................................................................................................. 10

Major components of OptiPlex 3000 Tower................................................................................................................11

Side cover............................................................................................................................................................................ 13

Removing the side cover............................................................................................................................................13

Installing the side cover.............................................................................................................................................. 15

Front bezel ..........................................................................................................................................................................17

Removing the front bezel...........................................................................................................................................17

Installing the front bezel.............................................................................................................................................18

Hard-drive assembly.........................................................................................................................................................20

Removing the 2.5-inch hard drive assembly.........................................................................................................20

Removing the secondary 2.5-inch hard drive assembly.................................................................................... 22

Removing the 2.5-inch hard drive bracket............................................................................................................22

Installing the 2.5-inch hard drive bracket..............................................................................................................24

Installing the secondary 2.5-inch hard drive assembly.......................................................................................26

Installing the 2.5-inch hard drive assembly...........................................................................................................26

3.5 in. hard-drive assembly............................................................................................................................................. 28

Removing the 3.5-inch hard drive assembly.........................................................................................................28

Installing the 3.5-inch hard drive assembly...........................................................................................................29

Solid-state drive................................................................................................................................................................ 30

Removing the M.2 2230 PCIe solid-state drive...................................................................................................30

Installing the M.2 2230 PCIe solid-state drive..................................................................................................... 30

Removing the M.2 2280 PCIe solid-state drive....................................................................................................31

Installing the M.2 2280 PCIe solid-state drive..................................................................................................... 32

WLAN card..........................................................................................................................................................................33

Removing the WLAN card.........................................................................................................................................33

Installing the WLAN card...........................................................................................................................................35

Coin-cell battery................................................................................................................................................................ 36

Removing the coin-cell battery................................................................................................................................36

Installing the coin-cell battery.................................................................................................................................. 37

Memory module................................................................................................................................................................. 38

Removing the memory module.................................................................................................................................38

Installing the memory module...................................................................................................................................39

Contents

Contents 3