The Wise WA-CRS07 CFast / SD UHS-II Combo Card Reader can transfer data from CFast and SD Cards at the same time to your computer via USB3.0 Gen2. The USB3.0 Gen2 interface can download data at speeds up to 10Gbps that is twice faster than USB3.0. This card reader is fully backward compatible with USB 3.0, 2.0, 1.1 but will transfer at a slower rate.