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Reference Guide 6-21
Writer: Holly Jahangiri Saved By: ACastle Saved Date: 07/25/97 2:13 PM
Pages: 28 Words: 3072 Template: c:\msoffice\templates\comm.dot
File Name Ch6.doc Part Number 278019-001
Using the Cable-Select Feature with Ultra ATA Devices
Optional drives are available from Compaq in kits that include a
special drive cable. The configuration of the drives employs a
cable-select feature that identifies the drives as device 0
(primary drive) or device 1 (secondary drive). The system board
determines which drive is device 0 or device 1, based on the
way the drives are connected to the special drive cable. The
device 0 drive is the drive connected to the short segment of the
drive cable (or that connector closest to the system board); the
device 1 drive is the drive connected to the long segment of the
drive cable. The device 0 and device 1 identities are used by the
system to distinguish between the two drives.
The installation requires no jumper setting changes on the
existing or optional drives. All Compaq drives have the jumpers
preset for cable-select installation.
✎
If installing a second device on the primary controller,
you must use an 80-conductor Ultra ATA cable for
optimal performance. This cable is available as a Compaq
option.
Installing a 5.25-Inch Drive into a 5.25-Inch Drive Bay
1. Install one high hat screw on the right side of the front of
the drive. This acts as a guide screw to align the bracket in
the drive bay.
Inserting the High Hat Screw on the Right Side of the Drive
2. Install the drive assembly into the drive bay. Ensure that
the guide screw fits into the tab on the side of the bay.