Kramer VP-14 is a 4-port port extender for RS-232 data control signals. It sends data from any port to the other three. It has 4 null-modem RS-232-C compatible transmitter/receiver ports. Control via DIP¢‚¬Å“switches for straight (flat) or crossed connection. Applications include controlling a single matrix switcher or other product via several computers and/or controllers, monitoring of several RS¢‚¬Å“232 controlled machines via one PC port, or inter-communication between several serially controlled machines. Includes power supply and mounting bracket. Optional RK-3T for 19‚ rack mounting.