Lenovo 41X8111 - Manual (Page 12)

Identifying parts on the system board
The system board (sometimes called the planar or motherboard) is the main circuit
board in your computer. It provides basic computer functions and supports a
variety of devices.
The following illustration shows the locations of parts on the system board for
some computer models.
1 Microprocessor fan connector 11 Front panel connector
2 Microprocessor and heat sink 12 SATA IDE connectors (2)
3 Memory connector 1 13 Front USB connectors (2)
4 Memory connector 2 14 Serial (COM) connector
5 Clear CMOS/Recovery jumper 15 PCI adapter connectors
6 Power connector 16 Front audio connector
7 Diskette drive connector 17 PCI Express x16 graphics adapter
connector
8 IDE connector 1 18 PCI Express x1 adapter connector
9 IDE connector 2 19 System fan connector
10 Battery 20 12v power connector
4 Hardware Replacement Guide