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1-6 Dell OptiPlex GX
pro
Systems Service Manual
Hard-Disk Drive Options
The hard-disk drive bracket is located next to the drive bays at the front of the
system unit. The system unit can contain up to two, one-inch-high, hard-disk
drives or one, 1.6-inch-high, half-height and one, one-inch-high, hard-disk
drive.
Enhanced Dual-Interface EIDE Subsystem
The enhanced dual-interface EIDE subsystem supports two EIDE interfaces
(primary and secondary), each of which can support up to two EIDE devices.
The EIDE controller resides on the high-speed PCI local bus.
•
The primary EIDE interface (IDE1) provides support for up to two high-
performance EIDE devices. The system’s boot drive should be connected to
the primary EIDE interface.
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The secondary EIDE interface (IDE2) also provides support for up to two
high-performance EIDE devices, typically EIDE tape drives or CD-ROM
drives.
NOTE: The externally accessible drive bays at the front of the system unit are
normally used for diskette drives, CD-ROM drives, and/or tape drives. Hard-
disk drives should be installed in the internal hard-disk drive bracket described
in the previous subsection, “Hard-Disk Drive Options.” For detailed information
about the data storage subsystem, see Chapter 9, “Installing Drives,” in the User’s
Guide.
Audio Controller
The system board has a built-in 16-bit Creative Labs ViBRA 16 audio controller
chip and connectors on the back panel for connecting the system unit to external
audio devices (speakers, microphone). The controller supports all the sound
functions found on the Sound Blaster expansion card from Creative Laborato-
ries, Inc.
Chapter 6, “Using the Integrated Audio Controller,” in the User’s Guide pro-
vides instructions for connecting the system to external audio devices and
configuring the integrated audio controller to avoid resource conflicts.
PCI Video Card
The video subsystem consists of a high-speed, high-resolution video adapter card
installed in one of the bottom two PCI expansion-card connectors (PCI1 or PCI2).
Because the video adapter card connects to the PCI local bus rather than to the
ISA-compatible system bus, communication between the video subsystem and
the microprocessor is much faster. The PCI local bus operates at a frequency of
30 or 33 MHz as opposed to the 8-MHz operating frequency of the ISA bus.
NOTE: Some users may use an ISA video adapter card.