Figure 7-2 Locating The Pci Option Slots - Silicon Graphics Origin200 Owner's Manual

Chapter 7: Installing and Removing PCI Option Boards
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4. Locate an available PCI option slot. See Figure 7-2.
Although you can install a PCI board in any open slot, you may observe better
I/O performance if you install boards starting in order with slot 5, particularly
if the PCI board you are installing can perform prefetching.
PCI backplane
Foot
Feature cable
connectors
Figure 7-2 Locating the PCI Option Slots
7 6 5
Rear of System
PCI option slots