Dell OptiPlex E1 - Manual (Page 92)

6-2 Dell OptiPlex E1 Mini Tower Managed PC Reference and Installation Guide
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Expansion cards are installed on the computer’s riser board (see Figure 6-3). The riser
board plugs into the RISER connector on the system board (see Figure 6-1) and is
considered an extension of the system board.
The system accommodates up to four expansion cards, which can be a combination
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.)
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Four expansion-card connectors reside on the riser board (see Figure 6-3). The riser
board expansion-card connectors support two 8- or 16-bit ISA expansion cards and
two 32-bit PCI expansion cards in the following manner:
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Expansion-card connectors ISA1 and ISA2 (at the top of the card) support 8- or
16-bit ISA expansion cards.
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Expansion-card connectors PCI1 and PCI2 support 32-bit PCI expansion cards.
NOTE: Because of the height of the hard-disk drive, expansion-card connector
PCI1 is limited to an 8.75-inch-long card.
8-bit ISA expansion card
16-bit ISA expansion card
32-bit PCI expansion card