Any device added to a computer that performs an additional feature is called as Accessories. A example of an accessory is the computer printer, which gives the computer the ability to print, without effecting the computer performance as it would still work if it didn't have the printer. Below, is a listing of computer accessories. Expenditure while buying computer systems does not stop with the initial purchase of the hardware and software but also includes buying of various materials which are important . Different computer supplies and consumables are needed to enhance the functioning of a computer system operating. These include items like paper for printers, photocopiers and fax machines. ink and toner for printers, photocopiers and fax machines etc.