Epson EL 486UC - Manual (Page 79)

Connecting the drive and power cables to the drive
Follow the steps below to connect the hard disk drive ribbon
cable and a power supply cable to the drive:
1. Locate the free connector on the end of the hard disk drive
ribbon cable.
2. Locate pin 1 on the drive connector. If you do not see it on
the connector casing, turn the drive over so you can see the
drive’s circuit board, as shown below. There is a “1” or “2”
printed on the board to identify the side of the connector
containing pin 1.
3. Position the connector on the cable so that the red wire
aligns with pin 1 on the drive.
4. Make sure the holes in the cable connector fit over all the
pins; then push in the connector.
4-6 Installing and Removing Drives