Lite-On DVD+ -R RW 8x8x12 40x24x40 USB2 Retail. CD write speed: 40 x, CD rewrite speed: 24 x. CD read speed: 40 x. Drive device, buffer size: 2 MB. Dimensions (WxDxH): 145 x 41.3 x 170 mm, Weight: 0.9 kg. Minimum RAM: 128 MB, Minimum processor: Pentium III 450 MHz, Compatible operating systems: Windows 98 / NT 4.0 / ME / 2000 / XP