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Figure 4. System board part locations
1 Microprocessor 12 Front panel connector
2 Microprocessor fan connector
13 USB connectors (2)
3 Memory slots (2) 14 Serial (COM 2) connector
4 Thermal sensor connector 15 Front audio connector
5 24-pin power connector 16 Internal speaker connector
6 Parallel connector
17 PCI card slots (2)
7 Battery
18 PCI Express x1 card slot
8 Cover presence switch connector (Intrusion switch
connector) (available in some models)
19 PCI Express x16 graphics card slot
9 SATA connectors (3) 20 System fan connector
10 Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
21 4-pin power connector
11 Power fan connector
22 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. Internal
drives are installed in bays. In this manual, the bays are referred to as bay 1, bay 2, and so on.
When installing or replacing an internal drive, it is important to note the type and size of the drive that you
can install or replace in each bay and correctly connect the cables to the drive installed. Refer to the
appropriate section in Chapter 2 “Installing or replacing hardware” on page 11
for instructions on how to
install or replace internal drives for your computer.
Chapter 1. Product overview 9