LaCie 2big Dual 1.5TB. Total storage capacity: 1500 GB, Hard drive capacity: 750 GB, Hard drive rotational speed: 7200 RPM. Cables included: eSATA, USB 2.0. Bundled software: -EMC Retrospect Express advanced backup & data restore (Mac). Weight: 2.63 kg. Compatible operating systems: -Windows 2000 + -Mac OS X 10.4 +