Epson 3865X Plus - Manual (Page 197)

Changing the Jumper Settings
The hard disk drive jumpers are located on the drive’s circuit
board, near the large cable socket. The jumpers on your drive
may be in a slightly different location than the one shown
below, but you set them the same way.
HSP
C/D
DSP
ACT
large
cable
socket
There are four positions for the jumpers on each hard disk drive.
Jumpers are installed in only two of the positions and the other
two positions are left open.
To move a jumper from one position to the other, use your
fingers, needle-nose pliers, or tweezers to pull it off its pins and
gently move it to the other position. Be careful not to drop the
jumper or damage the pins as you install it.
If you are going to use only one hard disk drive, the jumpers
should be set in positions C/D and ACT. If not, change them to
these settings. Then see “Installing a Hard Disk in the Vertical
Position,” on page B-8, for instructions on installing your first
hard disk drive.
B-6 Installing and Removing Disk Drives