Compaq Prolinea Family Maintenance & Serice Manual page 109

Reverse the above procedure to install the mounting bracket and bezel onto
the diskette drive and install the diskette drive.
Second Hard Drive
Hard drives installed in the ProLinea Personal Computer use cable-select
technology. Cable-select technology identifies the hard drives as device
0 (master) or device 1 (slave), depending on where they are connected on
the cable-select cable. The configuration jumpers on both hard drives are
set the same; the jumpers are preset for cable-select installation.
A typical cable-select installation is illustrated in Figure 5-30. The
single-port hard drive cable connects the cable-select cable to the
backplane board. The device 0 drive is the drive that is closer to the
backplane board; it is connected to the short segment of the cable-select
cable. The other drive is identified as the device 1 drive by being
connected to the longer segment of the cable-select cable.
IMPORTANT: Cable-select may not function properly if drives other than
those supported by Compaq are installed.
NOTE: The second drive on a cable-select cable can be a CD-ROM drive.
However the CD-ROM drive must be installed in the device 1 position
if there is a hard drive installed on the same cable.
the CD-ROM drive is set for cable-select configuration.
Ensure that