Dell OptiPlex Gxi - Manual (Page 25)

System Overview 1-7
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
security cable slot
NIC connector
AC power receptacle
parallel port connector
USB connectors
mouse connector
keyboard connector
serial port connector
video connector
line-in jack
microphone jack
line-out jack
padlock ring
system board
expansion-card
cage
riser board
hard-disk drive
bracket
internal drive bays
interface cable