Transcend TS-RDF2 CFast 2.0 USB 3.1 Card Reader Supports CFast 2.0/CFast 1.1/CFast 1.0 Memory Cards Transfer speeds of up to 500MB per second USB 3.0 interface for higher transfer speeds Fully compatible with SuperSpeed USB 3.0 &amp; Hi-Speed USB 2.0 Convenient LED data transfer activity indicator