Lenovo 9946 Personal Computer User Manual


 
Locating parts on the system board
Figure 4 shows the location of the parts on the system board.
1 4-pin power connector 13 Internal speaker connector
2 System fan connector 14 Front USB connector 2
3 Microprocessor fan connector 15 Clear CMOS (Complementary Metal-Oxide
Semiconductor)/Recovery jumper
4 Microprocessor and heat sink 16 Front USB connector 1
5 Memory slots (4) 17 Serial (COM2) connector
6 24-pin power connector 18 Serial (COMl) connector
7 Thermal sensor connector 19 CD-IN connector
8 Diskette drive connector 20 Front audio connector
9 Cover presence (Intrusion) switch
connector
21 PCI card slots (2)
10 SATA connectors (4) 22 PCI Express x16 graphics card slot
11 Power fan connector 23 PCI Express x1 card slot
12 Front panel connector 24 Battery
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
Figure 4. System board parts locations
12 User Guide