[Compatible with] MacBooK Pro Retina 13" A1425, 15" A1398 Late 2012- Early2013. EMC 2557, EMC 2672 EMC 2512 EMC 2673 [Order contains] 1 x 128GB SSD (Pre-loaded with Catalina,Pluy and Play), 1 x 16GB USB Bootable Installer (macOS Catalina), 2 x Screwdrivers (For removing the back panel and ssd screws) [Read and Wrtie] 128GB TLC SSD Using the latest in mSATA 3 technology, reach speeds of up to 500 MB/s read and 400MB/s write. [About warranty] We provide 3-year worry-free warranty. If you have any other questions, please feel free to contact us, we will provide the most professional service