Dell OptiPlex NX1 Service Manual - Page 25

see If the LED is on, the riser board is receiving power; if off,

Page 25 highlights

The OptiPlex NX1 computer has one PCI expansion-card connector on the riser board (see Figure 1-7). The computer automatically assigns any required memory 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 capability. The power LED lights up when DC power is applied to the riser board. power LED Wakeup On LAN power connector PCI1 connector 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. LED ISA2 connector HDLED connector P1 connector ISA1 connector PCI2 connector PCI1 connector The OptiPlex GX1 midsize computers have five expansion-card slots. The riser board is offered in two options. Option 1 is a passive riser board, with no PCIto-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 total of five expansion-card slots (see Figure 1-9). Option 2 is an active riser System Overview 1-13

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System Overview
1-13
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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.
)LJXUH±²´º³±±5LVHU±%RDUG±IRU±WKH±2SWL3OH[±1;²±&RPSXWHU
/RZ´3URILOH±&RPSXWHU•V±([SDQVLRQ´&DUG±6ORWV±
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.
)LJXUH±²´À³±±5LVHU±%RDUG±IRU±WKH±/RZ´3URILOH±&RPSXWHU
0LGVL]H±&RPSXWHU•V±([SDQVLRQ´&DUG±6ORWV±±±
±
The OptiPlex GX1 midsize computers have five expansion-card slots. The riser
board is offered in two options. 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
total of five expansion-card slots (see Figure 1-9). Option 2 is an active riser
Wakeup On LAN
power connector
PCI1 connector
power LED
ISA2 connector
LED
PCI2
connector
PCI1
connector
HDLED
connector
ISA1
connector
P1 connector