Epson 500 Series - Manual (Page 54)

Before you can use the mouse or other pointing device with your
applications, you need to install the special software driver that
came with it. See the documentation supplied with the device for
instructions.
Connecting the Fax/Modem Telephone Line
If the internal fax/modem is installed in your ActionNote
computer, you can connect it directly to your telephone line using
a standard phone jack. The modem will then be ready to use.
Note
If your computer did not come with the internal fax/modem
installed, you must have an Authorized EPSON Servicer
install it.
If you purchased a fax/modem with your computer, a telephone
cable is include in your package. Insert one end of the modular
jack cable into the LINE port on the side of the computer and
insert the other end into a modular jack outlet.
Connecting Optional Devices 4-9