hp dc7900 cmt 85% ps e7400 2gb 160gb dvdrw xpp dg convertible mini tower vista business with xppro installed including downgrade media form factor : convertible minitower processor : intel core2 duo processor e7400, 2.8 ghz, 3 mb l2 cache, 1066 mhz fsb memory : 2 gb pc2-6400 ddr2 800 sdram memory mem slots : 4 dimm chipset : intel q45 express storage : 160 gb 7200 rpm sata 3.0gb/s drive, sata dvd+/-rw 16x supermulti lightscribe 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 ports : rear : 6 x usb 2.0, 1 x serial, 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 slots : 3 x full-height pci, 1 x full-height pci express x1, 2 x full-height pci express x16 os : windows vista business with downgrade to windows xp professional keyboard : usb standard keyboard pointing device : hp usb 2-button optical scroll mouse power : 85% high efficiency active pfc dimension(h x w x d) : 447.8 x 177.8 x 452.12 mm weight : 11.8 kg