hp dc7900 usdt 87% ps e8400 2gb 160gb dvdrw xpp dg ultra slim desktop vista business with xppro installed including downgrade media form factor : ultra-slim desktop processor : intel core 2 duo processor e8400, 3.00 ghz, 6mb l2 cache, 1333 mhz fsb memory : 2gb (2 x 1 gb) pc2-6400 ddr2 800 sdram memory slots : 2 sodimm chipset : intel q45 express storage : 160 gb sata 3.0gb/s 7200 rpm hard disk drive optical drives : slim 8x supermulti lightscribe drive drive bays : 1 x internal 2.5 inch, 1 x slimline drive bay os : windows vista business with downgrade to windows xp professional comm : integrated intel 82567lm gigabit network connection graphics : intel graphics media accelerator 4500 integrated graphics audio : integrated hd audio with adi1884a codec, internal pc speaker slot : 1 mini pcie ports : rear: 6 x usb 2.0, 2 x ps/2, 1 x rj-45, 1 x vga, 1 x display port, audio in/out; front: 2 x usb 2.0, headphone and microphone power : input voltage 90 264 / 100 240 vac, 50/60 hz, 47 63 hz, active pfc (87% high efficiency) dimensions (h x w x d) : 66 x 251 x 254 mm; weight : 3.1 kg