Specifically designed to fit nearly into the card slot of the MacBook Pro Compatible with MacBook Pro (Retina) 13" (Late 2012-Early 2015) Up to 95Mb/s read; 55MB/s write Built-In Error Correction Code (ECC) Available in 128GB and 256GB capacities Introducing Transcend's JetDrive Lite storage expansion cards for the MacBook Air and MacBook Pro with Retina display. JetDrive Lite expansion cards are a quick and easy way to gain the additional space you need without adding any bulk to your MacBook.Install in secondsSimply insert JetDrive Lite into the card reader slot on the side of your MacBook and instantly boost your storage capacity. With up to 256GB available, you can store up to 124,000 photos, 64,000 songs or 3840 min. of Full HD video.Blazing fastJetDrive Lite expansion cards are built with the highest quality NAND flash and can achieve read speeds of up to 95MB/s and write speeds of up to 55MB/s. Perfect for Time Machine backups, iTunes libraries, and everything in-between.Forget