This product is new and never used other than for testing to verify the drive meets the specifications.  Diskcopy LLC a commercial media duplication company.  We preload all formats of media for commercial customers.  These drives were excess inventory so we have tested it prior to posting.  Hitachi Toshiba WD or Similar. All have the same enclosure as the photos. The drives are not retail packaged since we purchase them in large volumes bulk packed for commercial imaging.  500GB USB 3.0 External Portable Hard Drive, 5400 RPM 2.5-inch hard drive  second generation Advanced Format drive. Advanced Format increases the physical sector size on HDDs from 512 bytes to 4,096 (4K) bytes, which improves drive capacities and error correction capabilities. The 500GB per platter, one-disk models are designed as a direct replacement for standard 9.5mm HDDs, for use in notebook PCs, external storage and gaming consoles, as well as new, thinner and more robust device designs.