WD 500GB Blue My Passport Ultra Portable External Hard Drive - USB 3.0 - WDBWWM5000ABL-NESN Secure portable storage with up to 2 TB capacity Optional 256-bit AES hardware encryption Automatic local and cloud backup Stylish design with a range of exciting colors USB 3.0 connectivity. 3-year limited warranty. Formatted for Windows. For Mac compatibility this Hard Drive requires reformatting. Refer to Application Guide for guidance on this