computer hardware and software, namely, personal computer connectivity devices, namely, computer network interface (or adapter) cards conforming to IEEE standards for asynchronous transfer mode, Ethernet, PCMCIA and token ring for internetworking and internetworking computers; electric cables and connectors; HUBs; concentrators; controlled attached modules; controlled access units; multistation access units; repeaters; bridges; routers; multiprotocol routers and brouters; modems; wireless networking units; local area network, wide area network and network management computer hardware; video conferencing computer hardware and computer software for use in the field of personal computer connectivity, computer internetworking, local area network and wide area network management and video conferencing and instruction manuals all sold as a unit