OWC 480GB Mercury Electra 3G SSD 2.5" Serial-ATA 9.5mm Solid State Drive Compatible with nearly any Mac or PC with a Serial ATA connection (SATA, SATA 2.0, or SATA 3.0) One of the fastest internal SATA 2.5" SSDs available and built in the USA Ultra-efficient block management & wear leveling 3 years manufacturers warranty Read speed up to 285MB/sec - Write speed up to 275MB/sec