Computers, computer software, computer boards and peripheral equipment and apparatus for use with computers; local and wide area computer networks and telecommunications equipment and apparatus; electrical, electronic and optical apparatus and equipment; electrical cabling, adapters, wiring, terminations, hubs, distribution equipment and interface equipment; ethernet adapters, interface boards, wiring and distribution equipment for use with computers and in computer networks; instruments, apparatus and software for monitoring and optimising the performance of computer networks and systems