WD My Passport for Mac 1TB portable external hard drive (model WDBJBS0010BSL), USB 3.0 (backward compatible with USB 2.0). FULLY FUNCTIONAL. Formatted for Mac (HFS+). 2.5-inch portable drive, USB-powered, no separate power adapter needed. Shows cosmetic scuffs and scratches from normal use, as shown in the photos. Includes the drive and its USB cable.