? Capacity: 4 TB - Encryption algorithm: 256-bit AES - Form factor: 8,9 cm ( 3,5 inch ) (8.9 cm) - Interface: USB 3.0 - Internal drive interface: Serial ATA - Features: Security lock slot (cable lock sold separately), One-touch backup, Fanless design, LED status indicator, Anti-slip, Power saving mode, Quick reconnect button, 256-bit AES