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Locating parts and connectors on the system board
Note: Your computer comes with one of the following system boards.
Figure 4 shows the locations of the parts and connectors on one type of system
board.
1 CPU 1 memory slots (6) 19 Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
2 CPU 1 memory fan connector 20 Thermal sensor connector
3 CPU 2 12 V power connector 21 Cover presence switch connector
4 Microprocessor 2 22 Personal System/2
®
(PS/2
®
) keyboard and
mouse connector
5 24-pin power connector 23 Internal speaker connector
6 CPU 2 fan connector 24 Front audio connector
7 CPU 2 memory fan connector 25 PCI card slot
8 CPU 2 memory slots (6) 26 PCI Express x4 card slot (x16 mechanical)
9 Power switch and LEDs connector 27 PCI Express x16 card slot
10 Auxiliary LED connector 28 PCI card slot
11 Right rear fan connector 29 PCI Express x16 card slot
12 Front fan connector 30 PCI Express x1 card slot
13 Card reader connector 31 Auxiliary 12 V power connector
14 Front USB connector 32 Left rear fan connector
15 Front IEEE 1394 connector 33 CPU 1 12 V power connector
16 Hard disk drive connectors (5) 34 CPU 1 fan connector
17 Optical drive connectors (3) 35 Microprocessor 1
18 Battery
33
32
31
34
35
Figure 4. System board part and connector locations
Chapter 1. Product overview 11