Epson Progression Setup Manual page 23

Note
If you have a mouse that requires a different type of port,
you can connect it to the built-in serial port or install an
appropriate option card to provide the port. You also need
to change the setting of jumpers JP3 and JP4 inside the
computer. See Chapter 3 of the
To connect a mouse to the built-in mouse port, plug the
connector into the mouse port as shown below.
Caution
Although the connectors and ports for the mouse and
keyboard are physically identical, they cannot be used
interchangeably. Be sure to plug the mouse connector into
the mouse port.
1-14
Setting Up Your System
User's Guide
mouse port
for instructions.