Features 4 external usb 3 0 super speed ports expands your computer via the pci express slot with 4 x usb 3 0 port supports usb 3 0 usb 2 0 and usb 1 1 and all modern os supporting usb 3 0 4 pin molex power connector 5v from atx power supply data transmission super speed 5gbps high speed 480mbps full speed 12mbps and low speed 1 5 mbps