APRICORN Aegis Padlock DT 4TB USB 3.0 FIPS 140-2 Encrypted USB 3.0 Desktop Hard Drive with PIN Access ADT-3PL256F-4000 Black Cache: 8MB Average Seek Time: 12ms Dimensions: 1.50 x 4.50 x 7.20 Package Contents: Aegis Padlock DT, Quick Start Guide, USB 3.0 cable & 12V AC Adapter