Dell OptiPlex 990 (Early 2011) - Manual (Page 4)

Installing The Memory .....................................................................................................22
8 Chassis Intrusion Switch........................................................................23
Removing the Chassis Intrusion Switch ..........................................................................23
Installing The Intrusion Switch .......................................................................................24
9 Speaker......................................................................................................25
Removing the Speaker ....................................................................................................25
Installing The Speaker .....................................................................................................26
10 Heat Sink..................................................................................................27
Removing the Heat Sink and Processor ..........................................................................27
Installing The Heat Sink And Processor .........................................................................29
11 Coin-Cell Battery....................................................................................31
Removing the Coin-Cell Battery ......................................................................................31
Installing The Coin-Cell Battery .......................................................................................32
12 Power-Switch Cable..............................................................................33
Removing the Power-Switch Cable ................................................................................33
Installing the Power-Switch Cable ..................................................................................34
13 Chassis Fan.............................................................................................35
Removing the System Fan ...............................................................................................35
Installing The System Fan ...............................................................................................36
14 Input/Output Panel.................................................................................37
Removing The Input/Output (I/O) Panel ...........................................................................37
Installing The Input/Output (I/O) Panel ............................................................................39
15 Power Supply..........................................................................................41
Removing the Power Supply ...........................................................................................41
Installing The Power Supply ...........................................................................................43