Features: With this product, you can expand original USB3.019P together with the mainboard into a two pin (20 pin rack, known as 19 pin). For 1 to 2 USB3.0 female threaded mounting panel types to mainboard with 19 pin/20 pin flat cable. You can use USB3.0 type conversion USB3.0 (20 pin head) to directly connect to the mainboard. The USB3.0 Female connector can be screwed onto the panel, and the USB3.0 port can be switches to a USB3.0 19 pin/20 pin cable. Tip: Due to the direct use of physical connection expansion, there may be some mainboards that are not compatibles and cannot be used. Specifications: Material：PVC Cable Length:Approx 15cm/5.9in Type: USB3.0 Female to Male Splitter Package Includes: 1PC Mainboard USB3.0 Cable note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before order. Due to the differences between different monitors, the picture may not reflect the actual color.