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Locating parts on the system board
Figure 42 “System board parts locations” on page 110 shows the location of parts on the system board.
Figure 42. System board parts locations
1 PCI adapter card slot 11 Memory slots (4)
2 PCI Express x16 adapter card slot
12 24-pin power connector
3 Battery
13 Serial (COM 2) connector
4 Internal speaker connector 14 Front audio connector
5 Cover presence (Intrusion) switch connector 15 SATA connectors (2)
6 Microprocessor fan connector
16 System fan connector
7 Thermal sensor connector
17 Front USB connector 1
8 Microprocessor
18 Front USB connector 2
9 4-pin power connector
19 Clear CMOS/Recovery jumper
10 Front panel connector
20 Power fan connector
Replacing the battery
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 replace the battery.
110 ThinkCentre Hardware Maintenance Manual