IBM Aptiva Hardware Handbook page 26

10.
After you have made your selections, click on OK.
A port is a connection on the back of the system unit in
which you plug a device, such as a printer. Most printers
are parallel printers, and therefore should be attached to
parallel ports.
note:
In the Connect window, you can assign your printer to a
port. However, if you have a parallel printer and you
attached it to your system unit as described in the Read
Me First publication, Windows automatically selects the
correct port (LPT1) for you.
11.
Click on Close to save your selections and exit the
"Printers" window.
16 Installing a printer driver