Lenovo ThinkCentre A55 8705 Hardware Replacement Manual page 13

The following illustration shows the locations of parts on the system board (some
models).
1
Microprocessor and heat sink
2
Microprocessor fan connector
3
Memory connector 1
4
Memory connector 2
5
Power connector
6
Diskette drive connector
7
IDE connector
8
SATA IDE connectors (2)
9
Power fan connector
10
Front panel connector
11
Clear CMOS/Recovery jumper
12
Front USB connectors (2)
13
Serial (COM) connector
14
Front audio connector
15
CD-IN connector
16
PCI adapter connectors (2)
17
PCI Express x1 adapter connector
18
Battery
19
PCI Express x16 graphics adapter
connector
20
System fan connector
21
12v power connector
Chapter 1. Locations
5