The Western Digital My Passport Ultra offers a massive 3TB capacity in a small 2.5in form factor so that you can take your all your photos, videos and music with you wherever you go. Compatible with both Windows & Mac, it features USB 3.0 compatibility, which means 5 Gb/s transfer speeds (3x faster than USB 2.0) and you can power up your My Passport Ultra without carrying a bulky power cord and plug. Backed by a 3 year Western Digital warranty.