G-Technology G-DRIVE slim Ultra-slim USB External Hard Drive 500GB (5400RPM) (0G02361) USB 3.0 for faster performance Mac-optimized performance to go in an ultra-slim profile Enjoy Time-Machine-ready plug-n-play setup on Mac OS 500 GBs stores photos, videos, music, and more in a sleek lightweight aluminum case Bus powered by the high-speed USB 3.0 port