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.
Figure 4. System board parts locations
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 |
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| connector |
11 | Front panel connector | 23 | 12 V power connector |
12 | Front USB connector | 24 | System fan connector |
