IBM 6343 Hardware Maintenance Manual page 36

Locating components
The following illustration will help you locate the various components in your
computer.
1 Power supply
2 PCI slot
3 Accelerated graphics port (AGP) slot
4 Support bar
Identifying parts on the system board
The system board, also 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 IBM-installed or that you can install later.
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IBM : Hardware Maintenance Manual
5 DIMM
6 Hard disk drive
7 CD drive or DVD drive
8 Diskette drive