WD My Passport 500GB Portable External Hard Drive Storage USB 3.0 Pink (WDBKXH5000APK-NETG) Bonus: Includes a Protective Case WD's automatic, continuous backup software works quietly in the background to help protect your data using minimal PC resources. Use WD Security to set password protection and hardware encryption and protect your files from unauthorized use or access. Ultra-fast data transfers with USB 3.0 interface Data Transfer Rate on USB up to 5 Gbps