HDE 2 Port USB 3.0 Express Card This device allows you to communicate with 127 different USB devices through one USB 3.0 interface, instead of a one to one (point to point) like eSATA. Providing 80% more power than a USB 2.0 card, this USB 3.0 controller card will reducing the need for additional external power adapters. Transfer 25GBs of data in up to 70 seconds with the 5Gbps transfer speed of SuperSpeed USB 3.0, compared to 14 minutes with USB 2.0 Backwards compatible with previous USB standards Compliant with ExpressCard 1.0 specs