Advanced Expansion Subsystem; Low-Profile Computer's Expansion-Card Slots; Figure 1-5. Internal View Of The Mini Tower Computer - Dell OptiPlex GXi Service Manual

AC power receptacle
security cable slot
parallel port connector
serial port connector
keyboard connector
mouse connector
USB connectors
NIC connector
video connector
microphone jack
line-out jack
line-in jack
padlock ring

Figure 1-5. Internal View of the Mini Tower Computer

Advanced Expansion Subsystem

The Dell OptiPlex GXi systems offer advanced expansion subsystems that can
support a mixture of traditional ISA expansion cards (called legacy cards), Plug
and Play ISA expansion cards, and PCI expansion cards. The ISA Configuration
Utility (ICU) included with the computer provides a means of avoiding resource
conflicts that might arise from such an arrangement.
After all legacy cards have been configured with the ICU, the computer auto-
matically assigns any required memory space, IRQ lines, and DMA channels to
any installed Plug and Play ISA expansion cards and PCI expansion cards the
next time the computer is rebooted. Chapter 3, "Using the ISA Configuration
Utility," in the Reference and Installation Guide describes the ICU and provides
instructions for using it to configure the computer.

Low-Profile Computer's Expansion-Card Slots

The 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 1-6). The low-profile computers have a passive riser board,
with no PCI-to-PCI bridge.
power supply
internal drive bays
hard-disk drive
bracket
interface cable
expansion-card
cage
system board
riser board
System Overview 1-7