bids are invited for keyboard and mouse set - wired keyboard and mouse set compatible with desktop computer usb interface full size keyboard optical mouse plug and play operation new and unused minimum 1 year warranty , battery 12v 7ah - rechargeable smf vrla battery rated voltage 12v capacity 7ah maintenance free sealed type suitable for ups application new and unused minimum 1 year warranty , drum 220bn - complete drum unit compatible with existing printer model suitable for clear and consistent printing proper fitment and reliable operation new and unused minimum 1 year warranty , ram 4gb ddr4 - ddr4 ram 4gb capacity minimum 2666 mhz compatible with existing motherboard new and unused minimum 1 year warranty , drum unit - complete drum unit compatible with existing laser printer suitable for proper image formation and clear print output correct model compatibility new and unused minimum 1 year warranty , printer thermal - printer thermal unit compatible with existing printer suitable for proper heating and printing operation correct electrical and physical compatibility new and unused minimum 1 year warranty , dvd writer - internal dvd writer compatible with existing desktop system sata interface supports dvd r dvd rw cd r and cd rw new and unused minimum 1 year warranty , ups switch - ups power switch compatible with existing ups system suitable for reliable power switching operation correct electrical rating and physical fitment new and unused minimum 1 year warranty