IBM 2179 Hardware Maintenance Manual page 22

7. Lift the computer as shown and take care not to let the keyboard slide off the
System board layout
14
Hardware Maintenance Manual
base.
3 2 1
1
Microprocessor connector
2
System fan connector (not used)
3
DIMM connectors
4
Power connector
5
Inverter connector
6
CD-ROM drive or DVD drive connector
7
Diskette drive connector
8
Hard disk drive connector
9
LCD connector
10
CMOS clear jumper
11
Battery
12
PCI expansion slot
13
PCI expansion slot
14
Reserved (not used)
15
CD-ROM or DVD-ROM audio connector
16
Speaker connector
17
USB connector
18
BTN (button) connector
19
IR (Infra Red) connector
20
Audio I/O and USB connector
21
CPU fan connector (fan located on EMC shield)