Ebest - 2 Port USB 3.0 Female to 20 Pin with Back Panel Bracket, Cable Length 50cm You can use USB 3.0 type-A female convert USB3.0 (20pin Header) directly connected to the motherboard USB 3.0 port x 2 switch to USB 3.0 20 pin cable x 1 With this cable, you can directly board 20pin socket (such as the latest series of motherboards Asus P7P55/USB3), converted to 2 usb3.0 socket! Very easy to use USB3.0 data cable connected to the chassis front panel of USB3.0! There is 2 screw holes at USB 3.0 Female end 1 X New USB technology Standard USB 3.0 A female to 20pin cable 50CM 100% brand new and high quality