This product is either discontinued or we cannot get that from suppliers.
Desktop Drives (TS64GJDL350), Capacity 64GB, Flash Type MLC, Read 95MB/s, Write 60MB/s, Operating Voltage 2.7V~3.6V, Operating Temperature -25°C (-13°F) to 85°C (185°F), Durability 10,000 insertion/removal cycles.
Introducing Transcend's JetDrive Lite storage expansion cards for the 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.