A modem that resides outside the computer, and that attaches to
the computer's serial port by cable. A modem that resides in a
self-contained box outside the computer system. A modem that
attaches to the computer externally, usually through a serial
port, and has its own power supply. An external modem operates
no differently than an internal modem, although it can be shut
off without turning off the entire computer. a hardware device,
that is attached to the serial port of the computer using a
serial port cable a modem in a small desktop chassis that uses a
cable to connect to a serial COM port or USB port on the back of
your computer a modem that is not built into your computer, but
which you can plug into your computer and your phone line to
access the Internet a small box that connects to the PC through
a serial I/O port modem that is plugged into one of the serial
ports on a computer. External modems often have lights on them
showing current activity. Because they are external, they also
have to have the