Epson EQUITY 386SX/16 PLUS - Manual (Page 174)

Position the power supply cable connector so that the
notched corners on the connector line up with the
notched corners of the power supply socket on your
drive. Make sure the holes fit over all the pins and then
push in the connector.
notched corners
Caution
If you do not correctly align the holes with the pins,
you could severely damage your drive when you push
in the connector.
If you do not need to reinstall a vertically mounted hard
disk drive, see “Replacing the Subassembly” on page B-46.
If you just connected the power supply cable to your
vertically mounted hard disk drive, perform step 8 again
to connect the power supply cable to the drive you just
installed in the horizontal drive bay. Then see “Replacing
the Drive on the Subassembly” on the next page for
instructions on reinstalling the vertically mounted drive.
B-40 Installing
and Removing Disk Drives