If Your Drive has a 50-pin or 68-pin Connector
1) Using a non-magnetic screwdriver and four mounting screws, mount
the 50-pin or 68-pin drive in the computer system’s mounting frame as
shown in Figure 11. Use four 6-32 mounting screws. Do not install the
screws past .150-inch.
NOTE:
When mounting the drive, make sure the SCSI connector and power
connector face the rear of the chassis.
NOTE:
If you plan to install the WD Enterprise drive in a 5.25-inch bay,
you must install the mounting hardware. Contact your local dealer to obtain a
mounting adapter kit. Rails are sometimes necessary to complete the installa-
tion. Consult your computer system manufacturer.
4
4079-001056 Rev. A 5/97 H0310
Figure 11. Installing a 50- or 68-pin Drive
2) Obtain the appropriate type of SCSI ribbon cable, 50-pin or 68-pin.
3) Identify pin 1 on the ribbon cable. The colored stripe indicates pin 1.
4) Connect the ribbon cable connector to the hard drive by matching pin
1 on the ribbon cable with pin 1 on the hard drive connector. Refer to
Figures 12 and 13 to correctly identify pin 1 for each connector type.
Figure 12. Attaching the 50-pin SCSI Cable
Figure 13. Attaching the 68-pin SCSI Cable
NOTE:
If multiple devices are attached to the SCSI bus, they must be daisy-
chained using a ribbon cable with multiple connectors. The ends of the cable
must be connected to terminated devices. If the cable contains more connectors
than needed for the devices on the bus, mid-cable connectors may remain
unused. Consult your computer system or adapter card documentation for spe-
cific cabling requirements.
5) Connect the remaining ribbon cable connector to the SCSI controller
card or the motherboard by matching pin 1 on the ribbon cable with pin
1 on the SCSI connector. Refer to Figures 14 and 15.
Figure 14. Attaching a 50- or 68-pin SCSI
Cable to a SCSI Controller Card
Figure 15. Attaching a 50- or 68-pin SCSI
Cable to the motherboard
NOTE:
Before completing steps 6 and 7, ensure that power to the computer
system is turned off. Hot-plugging power to the drive is not recommended.
6) Locate an available 4-pin power supply connector cable inside the
computer system.
7) Connect the 4-pin power cable to the power connector on the drive.
Although the 4-pin connector is keyed to ensure proper insertion, refer
to Figure 16 for correct alignment.
