IBM 8302 Hardware Maintenance Manual page 52

The following illustration shows the locations of parts on the system board.
Types 8307, 8308, 8310, 8311, 8314, and 8315
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 IBM-installed or that you can install later.
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Hardware Maintenance Manual
1 Microprocessor
2 DIMM connector 1
3 DIMM connector 2
4 Power connector
5 Diskette drive connector
6 Primary IDE connector
7 Front panel connector
8 Secondary IDE connector
9 Battery
10 Clear CMOS/Recovery jumper
11 SCSI LED connector
12 PCI slots
13 Front panel audio connector
14 CD-ROM audio connector
15 AGP slot (some models)
16 Serial connector