Dell OptiPlex Gn - Figure 1-10. Riser Board for the Mini Tower Computers; Figure 1-11. EM Riser Board for the Mini Tower Computers; Hard-Disk Drive Options

1-10
Dell OptiPlex Gn and Gn+ Systems Service Manual
Two PCI expansion-card connectors share expansion-card slots with ISA con-
nectors, resulting in a total of seven expansion-card slots (see Figure 1-10). The
riser board is active, incorporating PCI-to-PCI bridging.
Figure 1-10. Riser Board for the Mini Tower Computers
If you have the EM version of the minitower computer, the riser board for the
computer is different (see Figure 1-11). P1 is the network card connection on
the riser board. If the LED is on, the riser is receiving power, if it is off, the riser
is not receiving power.
Figure 1-11. EM Riser Board for the Mini Tower Computers
Hard-Disk Drive Options
The following subsections provide service-related information about hard-disk
drive options in the low-profile, midsize, and mini tower computers.
ISA4
PCI1
PCI5
ISA2
PCI2
PCI3
ISA3
PCI4
ISA1
HDLED
connector
ISA4
ISA1
HDLED
connector
P1
connector
PCI1
PCI5
ISA2
PCI2
PCI3
ISA3
LED
PCI4