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Locating parts on the system board
Figure 4 shows the locations of the parts on the system board.
1 4-pin power connector 13 Front panel connector
2 Microprocessor 14 Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
3 Microprocessor fan connector 15 Front USB connectors (2)
4 DIMM 2 16 Front audio connector
5 DIMM 1 17 Internal speaker connector
6 DIMM 4 18 PCI card slots (2)
7 DIMM 3 19 PCI Express x1 card slot
8 Thermal sensor connector 20 PCI Express x16 graphics card slot
9 24-pin power connector 21 System fan connector
10 SATA connectors (3) 22 Cover presence switch connector (Intrusion
switch connector)
11 eSATA connector 23 Battery
12 Power fan connector 24 PS/2 keyboard and mouse connector
Locating internal drives
Internal drives are devices that your computer uses to read and store data. You can
add drives to your computer to increase storage capacity and enable your
computer to read other types of media. Your computer comes with the following
factory-installed drives:
v A Serial Advanced Technology Attachment (SATA) optical drive in bay 1
v A 3.5-inch card reader in bay 3 (installed in some models)
v A 3.5-inch SATA hard disk drive in bay 5
Figure 4. System board part locations
Chapter 1. Product overview 11