BUSlink 4TB CipherShield USB 3.0 AES 256-bit. Hard drive capacity: 4000 GB, Hard drive interface: USB 3.0, File format system: NTFS. Data transfer rate: 5000 Mbit/s, USB data transfer rates: 480, 5000 Mbit/s. Colour of product: Black, Green. Cables included: USB. Security algorithms supported: 256-bit AES