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2-12 Dell Dimension 900 System Reference and Troubleshooting Guide
PCI Expansion Card Upgrades
NOTE: This computer does not support older expansion card technologies, such as
Industry-Standard Architecture (ISA) cards.
The riser board accommodates up to two one-third–length, 32-bit Peripheral Compo-
nent Interconnect (PCI) expansion cards. PCI expansion-card connector 1 (PCI1) is
reserved for use with Dimension 900 system-specific expansion cards available only
from Dell (see “Available Upgrades” in Chapter 1). PCI expansion-card connector 2
(PCI2) is available for use with any one-third–length commercial PCI card.
Figure 2-6 shows a typical one-third–length PCI expansion card. Figure 2-7 shows the
two PCI expansion-card connectors on the riser board.
Figure 2-6. PCI Expansion Card
Figure 2-7. Riser Board PCI Expansion-Card Connectors
Make sure that you have a slot available for the type of card you are installing. Also
check the Windows 98, Windows Me, or Windows 2000 Device Manager, or
Windows NT Diagnostics for an available interrupt request (IRQ) line that is sup-
ported by the card.
PCI expansion card
PCI1 connector
PCI2 connector