Compaq Armada 1700 Reference Manual page 90

A PS/2 compatible mouse or external touchpad can be connected
to the computer.
To connect an external pointing device, insert the pointing device
cable into the keyboard/mouse connector.
External pointing devices need software device drivers to operate.
The necessary drivers should be provided by the manufacturer or
preinstalled with Microsoft Windows.
1. Turn off the printer.
2. Plug the printer end of the printer signal cable into the printer.
3. Connect the serial printer signal cable to the serial connector
on the back of the computer.
4. Plug the printer power cord into a properly grounded electrical
outlet.
5. Turn on the printer and resume your work.
Windows should prompt you to set up your printer before
printing for the first time. If you are not successful doing this,
consult the printer documentation for printer device driver
configuration information and instructions.
1. Turn off the printer.
2. Plug the printer end of the printer signal cable into the printer.
3. Connect the parallel printer signal cable to the parallel
connector on the back of the computer.