BUSlink 4TB CipherShield Penta AES 256-bit. Hard drive capacity: 4000 GB, Hard drive interface: FireWire 400, FireWire 800, mSATA, USB 2.0, USB 3.0, Hard drive size: 88.9 mm (3.5 "). Data transfer rate: 5000 Mbit/s, USB data transfer rates: 480, 5000 Mbit/s, FireWire data transfer rates: 400, 800 Mbit/s. Colour of product: Black. Weight: 1133 g, Width: 136.3 mm, Depth: 209.5 mm. Cables included: eSATA, FireWire, USB