Hard Drive Installation Guidelines; Using The Cable-Select Feature With Ultra Ata Devices - Compaq 141536-002 - Deskpro EN - MT RAMBUS Hardware Reference Manual

Using the Cable-Select Feature with Ultra ATA Devices

appendix B
H D
ARD RIVE
G
UIDELINES
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 computer recognizes device 0 as the drive
connected to the short segment of the drive cable (farthest from the
system board), and device 1 as the drive connected to the long segment
of the drive cable (closest to the system board).
When using an 80 conductor Ultra ATA cable, connect the colored
connectors as follows:
blue–system board (end)


gray–device 1 (middle)


black–device 0 (end)


Drive 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 standard on select models.
I
NSTALLATION
Hardware Reference Guide B-1