Western Digital

http://www.wdc.com/en/

My Passport 500 GB Portable Hard Drive

Sleek & Compact – Compact design with plenty of capacity for all your videos, music, photos and files. 

Ultra-Fast Data Transfers – Access and save files faster than ever with USB 3.0.

Automatic Backup – WD’s backup software automatically creates a second copy whenever you save or add a file.  If you ever lose an important file, find and retrieve it in seconds.