Dell OptiPlex 7020 - Working on Your Computer; Before Working Inside Your Computer; Turning Off Your Computer; After Working Inside Your Computer

Contents
1 Working on Your Computer................................................................................5
Before Working Inside Your Computer................................................................................................ 5
Turning Off Your Computer..................................................................................................................6
After Working Inside Your Computer................................................................................................... 7
2 Removing and Installing Components............................................................. 8
Recommended Tools............................................................................................................................8
System Overview...................................................................................................................................8
Front, Back, and Inside View........................................................................................................... 8
Removing the Cover........................................................................................................................... 10
Installing the Cover..............................................................................................................................11
Removing the Front Bezel................................................................................................................... 11
Installing the Front Bezel..................................................................................................................... 11
Removing The Expansion Card........................................................................................................... 11
Installing The Expansion Card.............................................................................................................13
Removing the Wireless Local Area Network (WLAN) Card................................................................13
Installing the WLAN Card.................................................................................................................... 14
Removing the Optical Drive................................................................................................................14
Installing the Optical Drive..................................................................................................................15
Removing the Drive Cage................................................................................................................... 15
Installing the Drive Cage..................................................................................................................... 16
Removing the Hard Drive.................................................................................................................... 17
Installing the Hard Drive...................................................................................................................... 17
Removing the Speaker........................................................................................................................ 18
Installing the Speaker.......................................................................................................................... 18
Memory Module Guidelines................................................................................................................19
Removing the Memory........................................................................................................................19
Installing the Memory..........................................................................................................................19
Removing the System Fan...................................................................................................................19
Installing the System Fan.................................................................................................................... 20
Removing the Power Switch...............................................................................................................21
Installing the Power Switch................................................................................................................ 22
Removing the Input/Output (I/O) Panel.............................................................................................22
Installing the Input/Output (I/O) Panel...............................................................................................23
Removing the Power Supply.............................................................................................................. 23
Installing the Power Supply................................................................................................................ 25
Removing the Coin-Cell Battery........................................................................................................ 26
Installing the Coin-Cell Battery.......................................................................................................... 26