Dell Precision 220 - Manual (Page 45)

System Board Components
Figure 8 shows the system board and the location of all its sockets and connectors.
Figure 8. System Board Components
1 Externally
accessible
drive bays
2 Hard-disk drive
cage
3 System board
4 Expansion card
slots
5 Padlock ring
6 I/O panel
connectors
7 Security cable
slot
8 AC power
receptacle
9 Power supply
10 DC power
cable
11 Drive interface
cable
1 CD-ROM drive audio interface connector
2 Serial port 1 connector
3 Parallel port connector
4 Serial port 2 connector
5 Fan connector
6 VRM connector
7 Microphone connector
8 Line-out connector