Definitions for "External modem"
Keywords:  serial, modem, port, uart, cable
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 separate component, and has lights that can help you see what is happening