KVM (Keyboard, Video, Mouse) switches and serial console management appliances for personal computer, server, and network device management; electronic switching and console server devices for interfacing to personal computers, workstations, servers and other computer networking equipment and parts therefor to enable the coaxial cable-based, Category 5/5e/6/7 UTP-based, LAN-based, WAN-based, modem-based, and Internet/web-based access and control of multiple devices from a single keyboard, monitor, mouse and other computer peripheral devices, namely, network routers, network switches, network hubs, network bridges, firewalls, Virtual Private Network (VPN ) appliances, Network Attached Storage, Storage Area Network (SAN) equipment, fibre channel switches/directors/routers/hubs/bridges, server appliances, power control devices, environmental monitoring devices, network/server load balancers, Uninterruptible Power Supplies, tape backup-library-changers, tape automation devices, converters, drivers, host adaptors, receivers, connectors, cables, decoders, encoders, keyboard and mouse emulation device and converter, microprocessors, pc monitoring equipment, server cards, testing devices, and network server management devices