1
Voltage selection switch (some
models)
10
USB connectors (2)
2
Power cord connector
11
Microphone connector
3
Standard mouse connector
12
Audio line-out connector
4
Standard keyboard connector
13
Audio line-in connector
5
Digital video interface (DVI) monitor
connector
14
PCI Express x1 adapter connector
6
Parallel connector
15
PCI Express x16 graphics adapter connector
7
Video graphics array (VGA) monitor
connector
16
PCI adapter connectors (2)
8
USB connectors (4)
17
Serial connector (some models)
9
Ethernet connector
Removing the cover
CAUTION:
The heat sink and microprocessor might be very hot. Turn off the computer and wait
three to ve minutes to let the computer cool before opening the computer cover.
This section provides instructions on how to remove the cover.
To remove the cover, do the following:
1. Shut down the operating system, remove any media (DVDs, CDs, or tapes) from the drives, and turn off
all attached devices.
2. Unplug all power cords from electrical outlets.
68 ThinkCentre Hardware Maintenance Manual