Computer peripherals and computer equipment, namely, electronic switches for accessing and controlling multiple computers or servers with a single keyboard, monitor and mouse; computer peripherals and computer equipment, namely, electronic switches tar allowing a plurality of users to independently access and control a plurality of computers or servers from a plurality of keyboards, monitors and mice; power switching and power control apparatus, namely, power switches; video splitter apparatus to display the output from a single computer on multiple computer monitors; extension and expansion apparatus, namely, electronic switches that allow multiple electronic units to be cascaded together and interface cables for linking computers with computer keyboards, computer monitors and computer mice; peripheral computer hardware tor transmitting computer keyboard, computer monitor, computer mouse, audio and serial data signals over a distance; computer networking apparatus, namely, computer hardware for encoding and transmitting computer keyboard, computer monitor, computer mouse, audio and serial data signals over a local area network or over the Internet; apparatus for managing and controlling computer peripherals, namely, electronic switches; computer peripheral interconnection equipment, namely, electronic switches; data transfer equipment, namely, electronic switches for system computer peripherals; modular electronic apparatus, namely, electronic switches used for modifying data processing apparatus, namely, computers, computer keyboards, computer mice and computer monitors, or for modifying computer peripherals used for networking purposes; data switching apparatus, namely, electronic switches; data transfer equipment, namely, electronic switches; apparatus for use in selective equipment interconnection and data transfer in a computer network, namely, computer network hubs, switches and routers; computer software used to control computer peripherals, transfer data to system computer peripherals, switch connections between different computers, computer peripherals, networks and servers; adapters, computer cables, and mounting racks for mounting computer hardware; downloadable electronic publications on the Internet in the nature of magazines and catalogs, all in the field of electronic switching equipment