Low-Profile Computer's Expansion-Card Slots; Midsize Computer's Expansion-Card Slots; Figure 1-6. Riser Board For The Low-Profile Computer - Dell OptiPlex GXa Service Manual

Low-Profile Computer's Expansion-Card Slots

The low-profile computers have three expansion-card slots. The riser board has
two ISA expansion-card connectors and two PCI expansion-card connectors.
One PCI expansion-card connector and one ISA expansion-card connector
share a single expansion-card slot, resulting in a total of three expansion-card
slots (see Figure 1-6). The low-profile computers have a passive riser board,
with no PCI-to-PCI bridge.
HLED
connector

Figure 1-6. Riser Board for the Low-Profile Computer

Midsize Computer's Expansion-Card Slots

The midsize computers have five expansion-card slots. The riser board is
offered in two options. Option 1 is a passive riser board, with no PCI-to-PCI
bridge. Option 1 has three ISA expansion-card connectors and three PCI
expansion-card connectors. One PCI expansion-card connector and one ISA
expansion-card connector share a single expansion-card slot, resulting in a total
of five expansion-card slots (see Figure 1-7). Option 2 is an active riser board,
with a PCI-to-PCI bridge. Option 2 has two ISA expansion-card connectors and
five PCI expansion-card connectors. Two PCI/ISA expansion-card connector
pairs each share an expansion-card slot, again resulting in a total of five
expansion-card slots (see Figure 1-8).
ISA2
connector
ISA1
connector
PCI2
connector
PCI1
connector
System Overview 1-9