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 and electronic apparatus and equipment for use with computers in computer networks; electrical cabling, adaptors, wiring, terminators, hubs, distribution equipment and interface equipment; ethernet adaptors, 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