Specifications

standard “Centronics-compatible” parallel printer port
interface.
MS-DOS uses the label “LPTl” (Line Printer #1) for the first
parallel port. Additional parallel ports can be added to your
computer through the use of multi-function boards. These ports
would be labeled LPT2, LPT3, etc.
Connecting Printers
Most, but not all, printers use the Centronics-compatible
parallel port.
To install this type of printer, connect an appropriate cable
between the parallel port connector on the rear panel of the
system motherboard in the main system unit and the input
connector on the printer. Information on the correct cable will
be found in your printer’s manual.
Connecting Modems
Modems are used to connect your computer to the telephone
line. Since the electronic requirements for the transmission of
your voice are different from those used by your computer, a
modem is used to “translate” your digital information to a
signal that can be sent over the telephone lines.
Internally mounted modems are to a circuit board
that will be installed inside your main system unit. These
7-4 Expanding Your System