Modem mountable in wall of a computer housing with readily accessible, on/off switch, indicator means and internal switch connecting either modem or an auxiliary serial port to an I/O port

摘要

Computer apparatus including a modular modem device having communications indicators and an on/off switch provided in its front panel and an external configuration suitable for insertion into a slot provided in the front or side wall of a computer housing. Communications jacks, I/O connectors and power leads are provided at the rear thereof for connection to corresponding terminals of the computer. The on/off switch controls a tri-stateable switching device which captures a serial I/O port of the computer when the modem is in use but releases the port when the modem is not in use.