Dell Precision 420 - Manual (Page 87)

Figure 11 shows a desktop chassis computer with its cover removed. Refer to this illustration to locate interior features and components of the
desktop chassis discussed in this guide.
Figure 11. Inside the Chassis (Desktop Chassis)
Figure 12 shows a mini tower chassis computer with its cover removed. Refer to this illustration to locate interior features and components of the
mini tower chassis discussed in this guide.
Figure 12. Inside the Chassis (Mini Tower Chassis)
Rotating the Power Supply Away From the System Board (Desktop Chassis)
1 Externally accessible drive bays
2 Hard-disk drive bracket
3 Power supply
4 System board
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 Drive interface cable
1 Externally accessible drive bays
2 Hard-disk drive cage
3 Power Supply
4 Security cable slot
5 Padlock ring
6 AC power receptacle
7 Expansion-card slots
8 I/O panel connectors