Wiebetech RTX400H-QJ. Total storage capacity: 4000 GB, Hard drive capacity: 1000 GB, Hard drive interface: Serial ATA. Power requirements: 100-240 V. Weight: 9.45 kg. Compatible operating systems: Windows XP/Server 2003/Vista Mac OS X 10.2.6 Linux. Dimensions (WxDxH): 177 x 270 x 231 mm