Kanguru DVDDUPE-SHD11. Hard drive capacity: 500 GB. DVD+R write speed: 24 x, DVD+R Double Layer write speed: 12 x, DVD-R write speed: 24 x. Compatible operating systems: Windows 2000/XP/Vista/7. Input voltage: 115 - 230 V, Input frequency: 50/60 Hz, Power supply: 300 W. Dimensions (WxDxH): 178 x 585 x 419 mm, Weight: 22.68 kg