Edge10 4TB DAS401. Total storage capacity: 4000 GB, Hard drive capacity: 0 GB, RAID levels: 0, 1, 5, 10, JBOD. Power requirements: 100 - 240 V, Power consumption (typical): 150 W. Weight: 3.1 kg. 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: FCC, CE, RoHS