Epson ActionDesk 4000 User Manual page 63

3. A jumper's setting is determined by where the jumper is
placed on the pins. Use the following table to identify the
pin settings for 2-pin, 3-pin, and 4-pin jumpers. To identify
pin 1, look at the system board under the jumper. A
triangle is traced on the board at pin 1.
To move a jumper from one position to another, use
needle-nose pliers or tweezers to pull it off its pins and
gently move it to the desired position.
Caution
Be careful not to bend the jumper pins or damage any
components on the main system board.
4. Replace any option cards you removed. See page 4-14 for
instructions.
installing and Removing Options
4-9