Computer support services (installation repair and maintenance of computer hardware and peripherals); information technology (IT) services (computer and computer peripherals installation and maintenance); installation and repair of computer hardware; installation of computerised information systems; installation of computers; installation of middleware (computer hardware); installation, maintenance and repair of computer hardware; installation, maintenance and repair of computer peripherals; maintenance and repair of computer hardware; maintenance and repair of computers; maintenance of computers; maintenance services relating to computer hardware; repair of computers; installation of data network apparatus; maintenance and repair of data communications networks; maintenance of data communication networks