Opening The Computer Cover - Lenovo ThinkCentre M90 Hardware Maintenance Manual

Figure 39. Rear connector locations
1
Optional serial port
2
Power cord connector
3
Audio line-in connector
4
Audio line-out connector
5
Microphone connector
6
Serial port
7
PS/2 keyboard and mouse connectors (optional)

Opening the computer cover

Attention
Do not open your computer or attempt any repair before reading and understanding the "Important safety
information" in the ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy
of the ThinkCentre Safety and Warranty Guide, go to:http://www.lenovo.com/support
This section provides instructions on how to open the computer cover.
CAUTION:
Turn off the computer and wait three to five minutes to let the computer cool before
opening the computer cover.
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8
7
6
5
4
3
6
5
8 4
3
7
8
VGA monitor connector (not applicable on some models)
9
USB connectors (4)
10
DisplayPort connector (not applicable on some models)
11
USB connectors (2)
12
Ethernet connector
13
PCI Express x16 graphics card slot
14
PCI card slot