1. 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. 2. Specifications: Item: Motherboard USB 3.0 19Pin/20Pin Cable. Cable Length: approx 20cm/7.87in. Material: Tinned Copper. 3. 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. 4. Package includes: 1 x USB 3.0 19Pin/20Pin 1 to 2 Splitter Cable