Epson Equity 286 PLUS - Manual (Page 161)

Pick up the hard disk drive cable and notice the connector
on the end of the cable. There is a tab on one side of the
connector, as shown below.
tab
Pull the cable over toward the socket and fold it to align the
connector with the socket. Make sure the side of the
connector with the tab lines up with the side of the socket
with the notch. Then line up the holes over all of the pins
and push the connector onto the pins.
Caution
If you do not correctly
could severely damage
the connector. align the holes with the pins, you
your computer when you push in
B-22 Installing
and Removing Disk Drives