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3 Hard disk drive (installed in some models)
7 Battery
4 System fan assembly
8 Internal speaker
Locating parts on the system board
Figure 4 “System board part locations” on page 9 shows the locations of the parts on the system board.
Figure 4. System board part locations
1 Thermal sensor connector
10 PCI card slot
2 Memory slots (2) 11 Front USB connector 2
3 Battery
12 Cover presence switch connector (Intrusion switch
connector)
4 System fan connector 13 Front USB, front panel, and front audio connector
5 Internal speaker connector
14 SATA connector 1
6 Serial (COM) connector
15 Microprocessor fan connector
7 SATA connector 2 and eSATA connector
16 4-pin power connector
8 PS/2 keyboard and mouse connector
17 Microprocessor
9 Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
Chapter 1. Product overview 9