8.Looking at the subassembly, locate one of the power supply cables that lead from the power supply (behind the horizontal drive bays). The cables are labeled P1, P2, and P3; you can use any one. As shown below, the end of the connector has two notched corners.

The power supply socket on the back of the drive is next to the ribbon cable connector. The socket also has two notched corners, as shown below.

power supply cable

power supply socket

notched corners

You must connect a power supply cable to each drive you install in your system. If you’ll be reinstalling a hard disk drive in the vertical mounting position, connect the power supply cable to this drive first. If not, connect the power supply cable to the drive you just installed in the lower horizontal drive bay.

Installing and Removing Disk Drives

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