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94 Installing Upgrades
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• After installing a SCSI hard drive, Primary Drive 0 and Primary Drive
1 should be set to None in system setup. If you have any EIDE devices
on the second EIDE channel, such as a CD or tape drive, Secondary
Drive 0 and/or Secondary Drive 1 should be set to Auto.
• You may need to use programs other than those provided with the
operating system to partition and format SCSI hard drives. Refer to
the documentation that came with your SCSI software drivers for
information on installing the appropriate drivers and preparing your
SCSI hard drive for use.
SCSI Cables
Ultra 160/m and Ultra2/Wide low-voltage differential (LVD) drives
(typically hard drives) both use a 68-pin cable. One end of the cable
attaches to the SCSI controller card. The remaining connectors on the cable
attach to the various drives.
Narrow SCSI drives (tape drives, CD drives, and some hard drives) use a
50-pin cable. One end of this cable attaches to the SCSI controller card.
The remaining connectors on the cable attach to the various Narrow SCSI
devices.
NOTICE: Dell recommends that you use only SCSI cables purchased from
Dell. Cables purchased elsewhere are not guaranteed to work with Dell
systems.
AGP Card Brace (Mini Tower Chassis
Only)
To access some components on the system board in the mini tower chassis,
you may need to remove the accelerated graphics port (AGP) card brace.
CAUTION: Before you perform this procedure, see "Safety First—
For You and Your Computer."
1
Turn off the computer and peripherals, disconnect them from their
electrical outlets, wait at least 5 seconds, and then remove the
computer cover.
2 Remove the screw that secures the AGP card brace to the chassis (see
the following figure).