Identifying Parts On The System Board - Lenovo ThinkCentre A51p Hardware Removal And Replacement Manual

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 IBM-installed or that you can install later.
The following illustration shows the locations of parts on the system board.
1
12V power connector
2
Diskette drive connector
3
Speaker connector
4
DIMM connector 4
5
DIMM connector 3
6
DIMM connector 2
7
DIMM connector 1
8
Clear CMOS/Recovery jumper
9
Front Panel connector
10
PATA IDE connector
11
SATA 4 IDE connector
12
SATA 3 IDE connector
13
SATA 2 IDE connector
14
SATA 1 IDE connector (primary hard
drive)
15
Cover presence switch connector
16
Power supply connector
17
PCI Express x1 slot
18
PCI Express x16 graphics slot
19
PCI slot
20
PCI slot
21
Battery
22
Microprocessor
23
Microprocessor fan connector
24
Microprocessor heat sink
Replacing customer replaceable units (CRUs)
3