Product Description Stop fretting about storage space. Transcend 960GB JetDrive 520 SATAIII 6Gb/s SSD Upgrade Kit TS960GJDM520 offers up to 960GB of storage capacity. Upgrading your Mac to a JetDrive SSD ensures you'll have plenty of space for all your favorite music, videos, and photos. 960GB Internal SSD Max Seq. Read: 495MB/s; Max Seq. Write: 427MB/s Next-generation SATA III 6Gb/s interface Compatible with MacBook Air (Mid 2012) External enclosure is fully compatible with SuperSpeed USB 3.0 and Hi-Speed USB 2.0