This Delock card reader is used to connect to a Power Over e SATA interface, a combination of e SATA & USB (Universal Serial Bus). It allows reading & writing of CFast Flash Memory Cards, by which you can use the full transfer speed of SATA. You have 2 different options of connection with this Card Reader to connect it to your computer:
1. Power Over e SATA Port
2. e SATA Port + USB (Universal Serial Bus) Port for power supply