3-15
Compaq Professional Workstation AP400 Maintenance and Service Guide
Backplane Board
The backplane board (riser card) is attached to the I/O bracket assembly (expansion board
bracket) by retaining screws.
The backplane board contains six expansion slots, five of which are available at any one time.
The following illustration identifies the physical location of slots 1-6. See the corresponding
table for component names.
1
2
3
4
5
6
Figure 3-15. Overview of PCI/ISA expansion slots
Table 3-1
PCI/ISA Slots
Reference
1
PCI slot
2
PCI slot
3
*
PCI slot
4
*
ISA slot
5
PCI slot
6
ISA slot
*Slots 3 and 4 are shared. They cannot be used simultaneously.