DataLocker 500GB Enterprise External Hard Drive USB 2.0 Model DL500E2 N/A RPM: 5400 RPM Form Factor: 2.5 Cache: 8MB Dimensions: 5.12 x 3.15 x 0.91 Weight: 9 oz. Package Contents: Enterprise DL1000E2 Hard Drive Silicone Bumper Quick Start Guide USB Short Cable USB 'Y' Cable Option: Normal