product information : hewlett packard dx2810 mt q9400 4gb 500gb dvdrw xppro downgrade hp dx2810 mt q9400 4gb 500gb dvdrw xppro downgrade microtower ati 2400xt xppro downgrade with vista form factor : micro tower processor : intel core 2 quad processor q9400, 2.66 ghz, 6 mb l2 cache, 1333 mhz fsb memory : 4 gb (2 x 2 gb) ddr2 synch dram pc2-6400 (800 mhz) memory memory slot : 4 dimms chipset : intel g45 express chipset storage : 500 gb 3.0gb/s serial ata hard drives (7200 rpm), dvd-rw drive comm : realtek 8111c-vb-gr gbe ethernet controller graphics : ati radeon hd 2400xt 256mb dual head graphics adapter audio : realtek alc662 high definition audio codec ports : 8 x usb (2 front, 6 rear), 3 int ports on system board(1 for front ports, one for media card reader, one for 3po device), 1 x serial, 2 x ps/2 (mouse,keyboard), front headphone and microphone jacks, rj-45, 1 x parallel, rear audio jacks, vga slots : 2 x full-height pci 2.3, 1 x full-height pci express x1, 1 x full-height pci express x16 (gen 2graphics slot) bays : internal : 2 x 3.5 inch external : 2 x 5.25 inch, 1 x 3.5 inch os : xp prof downgrade with vista business both media in box power supply : passive power factor correcting (pfc) 250-watt dimension(h x w x d) : 385 x 185 x 416 mm