iStorage IS-DG3-256-640 640GB diskAshur USB 3.0 256-Bit 2.5 Inch External Hard Drive
http://www.amazon.co.uk/gp/product/B007RZE0VQ?tag=istiqomah-21
Utilises Military Grade FIPS PUB 197 Validated Encryption Algorithm
Super fast USB 30 Connection - Data transfer speeds up to 10X faster than USB 20
Software Free Design
Self Destruct Password
Drive Reset Feature
