Technical support and consultation, namely, consultation regarding the installation, maintenance, and repair of computer printers, computer printer subassemblies, multifunction printers, multifunction printer subassemblies, telefacsimile machines, photocopiers, computers, magnetic and optical data storage drives, optical scanners, computer network routers, computer network hubs, computer network cards, computer power supplies, computer batteries, toner cartridges, and ink cartridges; installation, maintenance, and repair of computer printers, computer printer subassemblies, multifunction printers, multifunction printer subassemblies, telefacsimile machines, photocopiers, computers, magnetic and optical data storage drives, optical scanners, computer network routers, computer network hubs, computer network cards, computer power supplies, computer batteries, toner cartridges, and ink cartridges