Edge10 2.5TB DAS501t. Total storage capacity: 2500 GB, Hard drive capacity: 0 GB, Hard drive interface: Serial ATA II. Power requirements: 103 - 253 V, Power consumption (typical): 220 W. Weight: 5000 g. Minimum processor: Intel Pentium III, Mac G5, MacBook Pro, Mac Pro, Minimum RAM: 64 MB, Compatible operating systems: Win 2000/XP/Vista Mac 10.4.8+. Certification: CE, FCC, RoHS, UL