Dell Vostro 400, Руководство по обслуживанию, Страница: 20 / 118

1-8 Dell WorkStation 400 Systems Service Manual
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 computer’s boot drive should be connected to
the primary EIDE interface.
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 computer 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 Crystal CS4236B audio controller chip
and connectors on the back panel for connecting the computer to external audio
devices (such as speakers/headphones and microphone). The controller supports
all the sound functions found on the Sound Blaster expansion card from
Creative Laboratories, Inc.
Chapter 6, “Using the Integrated Audio Controller,” in the User’s Guide pro-
vides instructions for connecting the computer 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 33.3-MHz PCI local bus
rather than to the 8.33-MHz ISA-compatible system bus, communication
between the video subsystem and the microprocessor is much faster.