Dell OptiPlex NX1 Service Manual - Page 26
the LED is on, the riser board is receiving power; if off, the riser board is
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board, with a PCI-to-PCI bridge. Option 2 has two ISA expansion-card connectors and five PCI expansion-card connectors. Two PCI/ISA expansion-card connector pairs each share an expansion-card slot, again resulting in a total of five expansion-card slots (see Figure 1-10). Both riser board options include the P1 connector (for connecting the NIC to the riser board cable) and an LED. If the LED is on, the riser board is receiving power; if off, the riser board is not receiving power. LED HDLED connector ISA3 connector ISA2 connector ISA1 connector PCI3 connector P1 connector PCI2 connector PCI1 connector LED ISA2 connector ISA1 connector HDLED connector PCI5 connector PCI4 connector PCI3 connector P1 connector PCI2 connector PCI1 connector 1-14