Western Digital WD Black WD5000LPLX 500 GB SATA 6Gb/s 2.5" Internal Hard Drive - 7200 rpm - 32 MB Buffer - Portable - Bulk Bare Drive Western Digital WD Black WD5000LPLX 500 GB SATA 6Gb/s 2.5" Internal Hard Drive - 7200 rpm - 32 MB Buffer - Portable - Bulk Bare Drive