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Locating 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.
Figure 4 shows the locations of parts on the system board.
1 Microprocessor and heat sink 13 Front USB connector
2 Microprocessor fan connector 14 TCM header connector
3 Memory connector 1 15 Serial (COM) connector
4 Memory connector 2 16 Internal speaker connector
5 Power connector 17 Front audio connector
6 Diskette drive connector 18 CD_IN connector
7 IDE connector 19 PCI adapter connectors (2)
8 Power fan connector 20 PCI Express x1 adapter connector
9 Serial ATA connectors (4) 21 Battery
10 Clear CMOS/Recovery jumper 22 PCI Express x16 graphics adapter
connector
11 Front panel connector 23 12 V power connector
12 Front USB connector 24 System fan connector
Figure 4. System board parts locations
8 Hardware Installation and Replacement Guide