Fangrui Product Details Features: Using This Product, You Can Extend The Original Usb 3.0 19p That Comes With The Motherboard Into One For Two (20pin Holder, Empty One Pin Is Also Called 19pin). 1 To 2 Usb 3.0 Female Screw Mount Panel Type To Motherboard 19pin/20pin Flat Cable. You Can Use Usb 3.0 Type-a Female Convert Usb3.0 (20pin Header) Directly Connected To The Motherboard. The Usb 3.0 A Female Connector Can Screw At The Panel. Usb 3.0 Port Switch To Usb 3.0 19 Pin/20pin Cable.there Are Screw Mount Holes At Usb 3.0 Female End. Specifications: Item: Motherboard Usb 3.0 19pin/20pin Cable Cable Length: Approx 20cm/7.87in Material: Tinned Copper Note: Due To The Problems Of Lighting Effects And Shooting Angles, There Will Be Certain Tolerances In The Product, Please Understand. Please Allow 0-2mm Error Due To Manual Measurment. Package Includes: 1 X Usb 3.0 19pin/20pin 1 To 2 Splitter Cable Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.