Businesses in this category supply computers and related equipment for home, office, education and commercial use. This can include desktop computers, laptops, monitors, printers, keyboards, networking hardware, storage devices and cables, as well as accessories such as docking stations and protective cases. Some suppliers focus on new products, while others may offer refurbished or second-hand equipment. Services can include helping customers choose equipment to suit their requirements, setting up computers and transferring data, installing software, connecting devices to networks and providing repairs or maintenance. Businesses may also supply equipment in bulk to organisations and advise on compatible components or replacements. The range of products and support varies: some outlets concentrate on sales, while others provide technical assistance, upgrades and ongoing support for computer systems.