System Overview 1-7
Figure 1-5. Internal View of the Mini Tower Computer
Advanced Expansion Subsystem
The Dell OptiPlex Gn and Gn+ computers offer advanced expansion sub-
systems that can support a mixture of traditional ISA expansion cards (called
legacy cards), Plug and Play ISA expansion cards, and PCI expansion cards. The
operating system or the ISA Configuration Utility (ICU), included with the
computer, provides a means of avoiding resource conflicts that might arise from
such an arrangement.
NOTE: For systems running the Microsoft
®
Windows
®
95 operating system,
the functions provided by the ICU are handled by the Device Manager, which
can be accessed by double-clicking the System icon in the Control Panel.
Windows 95 documentation provides instructions on using the Device Manager
to manage resources and resolve conflicts.
After all legacy cards have been configured by the operating system or with the
ICU, the computer automatically 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.
power supply
security cable slot
AC power receptacle
parallel port connector
mouse connector
keyboard connector
serial port 1 connector
video connector
padlock ring
system board
expansion-card cage
riser board
hard-disk drive
bracket
internal drive bays
hard-disk drive
interface cable
voltage selection switch
serial port 2 connector
optional system board
NIC connector (Gn+)
USB connectors (2)
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