Transcend 64GB 2.5" SATA. Solid-state drive capacity: 64 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA. Read speed: 140 MB/s, Write speed: 110 MB/s. Operating voltage: 5 V. Mean time between failures (MTBF): 1000000 h. Mac operating systems supported: Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Linux operating systems supported: Feroda 13, Ubuntu 9.10