Dell OptiPlex NX1 - Manual (Page 26)

1-14 Dell OptiPlex GX1/GX1p Managed PC and OptiPlex NX1 Net PC Systems Service Manual
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The OptiPlex NX1 computer has one PCI expansion-card connector on the riser
board (see Figure 1-7). The computer automatically assigns any required mem-
ory space, IRQ lines, and DMA channels to an installed PCI expansion card
during system start-up. The Wakeup On LAN power connector on the riser
board supports an optional NIC expansion card with Wakeup On LAN capabil-
ity. The power LED lights up when DC power is applied to the riser board.
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The OptiPlex GX1 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 1-8). The low-profile computers
have a passive riser board, with no PCI-to-PCI bridge. The riser board includes
the P1 connector (for connecting the NIC to the riser board cable) and an LED
(see Figure 1-8). If the LED is on, the riser board is receiving power; if off, the
riser board is not receiving power.
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The OptiPlex GX1/GX1p midsize computers have five expansion-card slots.
The riser board for the GX1 is offered in two options. The GX1p uses the
option 2 riser board. 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
Wakeup On LAN
power connector
PCI1 connector
power LED
ISA2 connector
LED
PCI2
connector
PCI1
connector
HDLED
connector
ISA1
connector
P1 connector