The Dual Power USB 3.0 to SATA Cable allows you to connect 2.5" SATA HDD/SSD to your computer via USB port. It turns any 2.5" SATA HDD/SSD device into a convenient external device. In additions, it offers USB 3.0 with a theoretical data transfer speed of 5.0GBit/s. That's ten times faster than the USB 2.0 speed of 480 MBit/s. It is a perfect portable device for everyone. An additional USB type-A connector allows the cable to be connected to other USB 2.0/3.0 ports for maximum power and performance.