Epson 486SX - Manual (Page 142)

4. If you are installing your first hard disk drive, you also
need to connect the drive cable to
the
main board. The hard
disk drive socket is labeled
HDD
and is located to the right
of the memory card. Connect the cable
to
the
HDD
socket,
matching the notch on the socket to the tab on
the
cable.
notch tab
If you have difficulty reaching the socket, you can remove the
memory card; just be sure to reinstall it before you go on to
step 5.
5. Replace the computer’s front panel and cover as described in
Chapter 5; then see “Post-installation Setup” on page 5-12
to update your configuration.
7-20 Installing and Removing Drives