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6-2 Dell OptiPlex GX
i
Midsize Systems Reference and Installation Guide
Expansion Cards
Expansion cards can be installed on the computer’s riser
board (see Figure 6-3). The vertical riser board plugs
into the RISER connector on the system board (see Fig-
ure 6-1) and is considered an extension of the system
board.
The system accommodates up to five expansion cards,
which can be a mix of 32-bit PCI expansion cards and
8- and 16-bit ISA expansion cards. (See Figure 6-2 for
examples of ISA and PCI expansion cards.)
Figure 6-2. Expansion Cards
Expansion Slots
Six expansion-card connectors reside on the riser board
(see Figure 6-3). Because two expansion-card connectors
share slot space, a maximum of five expansion cards can
be installed.
Expansion-card connectors ISA1, ISA2, and ISA3
can accommodate 8- or 16-bit ISA expansion cards.
Expansion-card connectors PCI1, PCI2, and PCI3
support PCI expansion cards. Because connector
PCI3 shares expansion-slot space with connector
ISA1, only one card of either type can be installed in
the common slot.
Figure 6-3. Riser-Board Expansion-Card
Connectors
Installing an Expansion Card
Follow this general procedure to install an expansion
card:
1. If you are installing an ISA expansion card, enter
the ISA Configuration Utility (ICU) and add the
new expansion card to your configuration.
See Chapter 3, “Using the ISA Configuration Util-
ity,” for instructions.
NOTE: If you install a PCI or Plug and Play expan-
sion card, your system automatically performs any
required configuration tasks during the boot routine.
8-bit ISA expansion card
16-bit ISA expansion card
32-bit PCI expansion card
ISA3
ISA1
HDLED
connector
PCI3
PCI1
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