for ASUS Motherboard . Only support usb3.1/usb3.0 device, it can't work at USB2.0(480Mbps)Descripiton: 1. USB 3.1 require a different front panel header than USB 3.0. 2. The USB 3.1 port interface is using the USB 3.0 pin set and more. It is design to be backwards compatible (will explain later). 3. There are no official release of the specs for the USB 3.1 header yet (as of this writing), 4. But first motherboard with this is the ASUS ROG MAXIMUS IX FORMULA,STRIX Z270I/Z270G etc. 5. Length: 20cm/7.87inch 6. Connector1: USB 3.0 Front Panel Header 7. Connector2: USB 3.1 Front Panel Header ? Package Includes: 1 * USB Extension Cable Only the above package content, other products are not included. Note: Light shooting and different displays may cau the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.