User`s guide

Installing Expansion Boards
8-7
The 3940W contains a PCI bus internally, and that bus is scanned next
(PCI bus 1). Channel 1 and then Channel 2 of the 3940W are detected in
that order. Finally the 2940W is detected in PCI slot 3. The first device
found during the scan that is bootable will be the boot device. So, if all the
drives in this example were bootable, then the boot device would be the
first drive detected during the scan, which is the drive on Channel 1 of the
3940W (see Figure 8-2).
PCI Bus 0 (Slots 1-4)
PCI Slot 1
3940W
PCI Bus 1
ID 1
ID 3
Ch 1 ID 3
ID 1 Ch 2
PCI Slot 3
2940W
DEC00830
Figure 8-2. EISA/PCI Scan Order