HP RP5 Retail System Hardware Reference Manual page 46

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Connect an optional eSATA adapter cable to the black eSATA connector on the system board
labeled ESATA.
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The power cable for the SATA drives is a three-headed cable that is plugged into the system
board with the first connector routed to the rear of the primary hard drive, the second connector
routed to the rear of the secondary hard drive, and the third connector routed to the rear of the
optical drive.
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You must install guide screws to ensure the drive will line up correctly in the drive cage and lock
in place. HP has provided extra guide screws for the drive bays (five 6-32 standard screws and
four M3 metric screws), installed in the front of the chassis, under the front bezel. The 6-32
standard screws are required for a secondary hard drive. The M3 metric screws are required for
an optical drive. The HP-supplied metric screws are black and the HP-supplied standard screws
are silver. If you are replacing the primary hard drive, you must remove the four silver and blue
6-32 isolation mounting guide screws from the old hard drive and install them in the new hard
drive.
Figure 2-45
Table 2-7 Extra Guide Screw Locations
No. Guide Screw
1 Black M3 Metric Screws
2 Silver 6-32 Standard Screws
There are at total of five extra silver 6-32 standard screws. Four are used as guide screws for a
secondary hard drive. The fifth is used for bezel security (see
information).
40 Chapter 2 Hardware Upgrades
Extra Guide Screw Locations
Device
Optical Drive
Secondary Hard Drive
Front Bezel Security on page 65 for more