The U338-CF-SATA-5G is 10 times faster than USB 2.0, supporting USB 3.1 Gen 1 data transfer rates up to 5 Gbps. It’s backward compatible with previous USB generations, so you can connect it to older equipment. It also reads data up to 70 percent faster and writes up to 40 percent faster when connected to a UASP-enabled host controller.