Compatible with MacBook Air 11" & 13" (Mid 2013 - 2017), MacBook Pro Retina 13" & 15" (Late 2013 - 2015), Mac mini (Later 2014) and Mac Pro (Late 2013) Up to 1,600 MB/s read; 1,400 MB/s write JetDrive 850 NVM2 PCIe Gen3 x4 SSD inside a Thunderbolt enclosure Installation tools included Compatible with devices running macOS High sierra (10.13) or later Transcend's JetDrive 855 ThunderboltPCIe portable SSD combines a JetDrive 850 PCIe SSD with a sleek aluminum Thunderbolt enclosure to instantly revitalize your Thunderbolt-equipped MacBook Pro, MacBook Air, Mac mini, or Mac Pro!Thunderbolt technology in a sleek caseTranscend's JetDrive 855 features a 10Gb/s Thunderbolt interface, capable of blazing-fast file transfers. The drive is housed in a sleek, aluminum-alloy enclosure designed to tastefully complement your Mac's simple, clean lines. In addition, the inner SSD is removable for more versatile use based on your preferences.Expand storage in a flashUpgrading your Mac with a Transcend