Features: brand new and high quality USB3.1 USB-E to built-in 19/20P extension cable is designed to connect to built-in USB devices. ,This product can bring you a better DIY assembly experience, connect your motherboard interface in a better direction, beautify the chassis of the wires The transmission speed is very good, which is for USB3.0 GEN1 5Gbps and USB3.1 Gen2 10Gbps. Just plug and for play, the product is suitable for most motherboards, motherboard USB3.0 19pin/20pin holder to Type-C socket, Type-E to Type-C bus adapter, front or rear Type-C interface extension. The product has two different (left / right) interface directions, please check the relative socket to select the required product. Specifications: Product Name: USB3.1 USB-E to Built-in 19/20P Extension Cable Adaptation Range: USB3.1 Built-in 20P Type-E to Type-E Extension Speed Bandwidth: USB3.1 standard (10G/bps is supported within 30cm, 10G/bps is not supported after the USB cable is connected in series) Current Capacity: 3A Type: Left/Right Turning Size:Pls See the Pictures Material:ABS+ Metal Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Restrictions on use: Two or more USB cables are connected in series with signal attenuation, so it can only reach 5G gen1, but cannot reach 10G gen2. Package includes: 1 x Motherboard Header Adapter