Plextor PX-740A Installation And User Manual page 36

Section 2. Installing the PX-740A Internal ATAPI Drive
5. If you must use mounting rails, fasten the rails to the lower pair of
holes as shown in Figure 14. (In some instances, you may need to
fasten the rails to the upper set of holes.) After fastening the rails,
check their positioning by sliding the drive into the bay before you
mount the drive or connect any cables.
CAUTION: Be sure not to mistake the inner and outer face of the rail
when attaching. Typically, the smooth side of the rail faces away from
the drive's chassis.
Figure 14: Installing mounting rails (if needed)
6. Plug one connector of the 80-conductor IDE/ATA cable into the IDE
connector on the rear panel of the drive before you insert the drive
into your computer. Then thread the cable through the front of the
open bay and back toward the motherboard. The drive should slide
smoothly into the bay. If it does not, check for obstructions in the
bay and ensure the side rails are attached properly.
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PX-740A Installation and Users Manual