description: hp xw6600 80+ dual xeon e5410 4gb 80 dvd nvs290 xp dual xeon e5410 4gb 80gb dvdrom nvs290 vista business with xppro 32 downgrade microtower processor : 2 x quad-core intel xeon processor e5410 2.33 ghz, 1333 mhz fsb, 80 w memory : 4 gb (4 x 1 gb) pc2-5300f ddr2-667 ecc memory mem slots : 8 dimm slots chipset : intel 5400 storage : hp 80 gb 7200 rpm sata 3.0gb/s, sata 16x dvd-rom comm : integrated broadcom 5755 gigabit lan on motherboard (lom) graphics : nvidia quadro nvs 290 pcie (256 mb) audio : high definition integrated audio with internal speaker slots : 2 x pci slots (full-length), 2 z pci express x16 gen2 graphics, 2 x pci express (x8 connectors, x4 electrically) ports : front : 2 usb 2.0, 1 headphone out, microphone rear : 5 x usb 2.0, 2 x ps/2(keyboard, mouse), 1 x rj-45, 1 x audio line in, 1 x audio line out, 1 x mic in bays : 2 x ext 5.25 inch, 1 x ext 3.5 inch, 2 x int 3.5 inch, or 3 x int 2.5 inch power supply : 650w, 80 plus, wide-ranging, active power factor correction keyboard : hp ps/2 standard keyboard mouse : hp ps/2 scroll mouse os : windows vista 32b downgrade to xp32b os dimension(h x w x d) : 441 x 165 x 440 mm weight : 16.9 kg