Transcend 330S microSDXC card 256 GB Class 10, UHS-I, UHS-Class 3, v30 Video Speed Class A2 rating, incl. SD adapter | Conrad.com
Amazon.com: Transcend 256GB JetDrive Lite 360 Storage Expansion Card for 15-Inch MacBook Pro with Retina Display (TS256GJDL360),Black/silver : Electronics