Features: brand new and high quality 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 12cm/4.72in Material: Tinned Copper Package Includes: 1 x USb3.0 19Pin/20Pin 1 to 2 Splitter Cable 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.