2-10 Dell Dimension XPS D
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Systems Reference and Troubleshooting Guide
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The system board accommodates up to six expansion cards—32-bit Peripheral Com-
ponent Interconnect (PCI) expansion cards, 8- or 16-bit Industry-Standard Arc hitect ure
(ISA) expansion cards, and a 32-bit accelerated graphics port (AGP) expansion card.
Figure 2-5 shows examples of different types of expansion cards.

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Of the seven expansion-card connectors (see Figure 2-4), the brown one (AGP) is for
an AGP video card, the four beige ones (PCI1, PCI2, PCI3, and PCI4) are for PCI cards
(such as network and sound cards), and the two black ones (ISA1 and ISA2) are for
ISA cards (such as a modem card). Because connector ISA1 shares expansion-slot
space with connector PCI4, a maximum of six expansi on cards can be installed.
8-bit ISA expansion card
16-bit ISA expansion card
32-bit PCI expansion card
AGP expansion card