annual maintenance contract for computers and its peripherals , amc of desktop computer system , consisting of cpu with wires/cables viz-ata/pata/sata/usb/dbi/rj/lan etc mother board , cache memory , hdd , cd rom , ports , monitor , keypad , mouse , cabinet , ram including installation and updating of anti virus ( quick heal ) and connected peripherals as under . qty - 20 nos . ( i ) printer hp laserjet 1020 - 10 nos . ( ii ) printer hp laserrjet all in one - 01 no . ( iii ) printer hp colour laser cp 1025 - 02 nos . ( iv ) printer cannon 925 - 07 nos . ( v ) ups 600va except battery , which will be paid separately as required basis - 05 nos . ( vi ) ups 800va except battery , which will be paid separately as required basis - 06 nos . ( vii ) ups 1000va except battery , which will be paid separately as required basis - 09 nos . ( viii ) projector tdpt-100 - 01 no ( ix ) fax machine all in one , laserjet model no m-128fn/fw make hp - 01 no , battery 600 va set of one make exide . , battery 800 va set of two make exide . , battery 1000 va set of two make exide . note : the quantity of item s . no 2 to 4 are variable and same will be ordered as per requirement .