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 factory-installed or that you can install later.
The following illustration shows the locations of parts on the system board.
1 Diskette drive connector 13 PCI Express (x16) graphics adapter
connector (some models)
2 Speaker connector 14 PCI Express (x1) adapter connector
3 Memory connector 4 15 PCI adapter connector 1
4 Memory connector 3 16 PCI adapter connector 2
5 Memory connector 2 17 System fan connector (not used)
6 Memory connector 1 18 Battery
7 Front panel I/O connector 19 Temperature sensor connector
8 Serial connector (COM2) 20 Microprocessor fan connector
9 Serial ATA IDE connectors (5) 21 Microprocessor
10 Clear CMOS/Recovery jumper 22 Microprocessor heat sink
11 Cover presence switch (tamper sw)
connector
23 12v power connector
12 Power supply connector
Installing memory
Your computer has four connectors for installing dual inline memory modules
(DIMMs).
When installing DDR2 type memory modules, the following rules apply:
Chapter 3. Installing options 23
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