Dell Precision 420 - Manual (Page 36)

3. Slide the card brace forward until it disengages from the slot in the card guide, then rotate the brace up and lift it away from the chassis.
To replace the card brace, perform the following steps:
1. Insert the tab on the end of the card brace into the slot above the card guide at the front of the chassis (see Figure 19 ).
2. Lower the card brace, ensuring that the plastic card guide on the bottom of the card brace spring engages the AGP card.
3. Slide the card brace toward the back of the system until the tab at the end engages the slot in the chassis.
4. Replace the screw that secures the AGP card brace to the chassis (see Figure 19 ).
Expansion Cards
The Dell Precision 420 systems provide five 32-bit Peripheral Component Interconnect (PCI) expansion card slots. Slot 5 is shared with the RAID
port function.
The system contains five 32-bit expansion slots and a 32-bit AGP Pro 110 (4X) slot. If you use an AGP Pro 50 or Pro110 card, it occupies the
AGP slot and may occupy PCI slots 1 and 2. (See
Figure 20 for examples of these cards.)
Industry-standard architecture (ISA) expansion cads are not supported in this system.
Figure 20. Expansion Cards
Figure 21. AGP Pro110 Card Extension
1 Card guide (front of chassis)
2 AGP card brace
3 Card brace spring
4 Screw
5 Plastic card guide
6 Slot
7 Tab on AGP card brace
NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby
power LED on the system board has turned off. For the location of this LED, see
Figure 28 .
1 32-bit PCI expansion card
2 32-bit AGP card