Iomega Portable, 1.5TB, eGo. Hard drive capacity: 1500 GB, Hard drive interface: USB 3.0, Hard drive size: 63.5 mm (2.5 "). Colour of product: Silver. Security algorithms supported: 256-bit WEP. Data transfer rate: 5 Gbit/s, Minimum processor: Mac PowerPC G3/Intel Core Duo, Minimum RAM: 128 MB