Personal Computer User Manual

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 that are installed or that you can install later.
The following illustration shows the locations of parts on the system board.
1 Internal speaker connector 12 Fan connector 2
2 Serial connector 2 (COM2) 13 Memory connector 1
3 PCI Express (x16) graphics
adapter connector
14 Memory connector 2
4 Power supply connector 15 Memory connector 3
5 Diskette drive connector 16 Memory connector 4
6 12v power connector 17 Battery
7 Temperature sensor connector 18 PCI riser connector
8 Microprocessor heat sink 19 SATA IDE connectors (3)
9 Fan connector 1 20 Clear CMOS/Recovery jumper
10 Front panel connector 21 Cover presence switch (some models)
11 Microprocessor
Chapter 3. Installing options 23