Features: 100% brand new and high quality 100% brand new and high quality 100% brand new and high quality Dual USB 3.0 male to 20 pin connector. Easy to add USB ports without taking up a PCI slot It can convert the 20-pin interface on the board to 2 USB3.0 interfaces directly. Install it in the original USB2.0 location, providing a front super high-speed USB3.0 interface. This product adopts USB3.0 standard protocol, the transmission speed can reach 5Gbps, the actual speed is about 500MB It is backward Compatible with USB2.0 and USB1.1 Package Includes: 1 Piece xUSB 3.0 to 20Pin Motherboard Cable. Specifications: Name: USB3.0 20PIN to Double Port A female Baffle Line Color: Blue OD:6.0mm Screw Model: M3 Conductor: Tinned Copper (standard 24+28awg) Shield: 96b Double Shield Outer Line Material: New Pvc Material Applicable Equipment: Personal Computer, Industrial Case Diy Length: approx 51cm /20.7in Interface: USB3.0 20PIN Suitable for : Winxp/Vista / Win7 / Win8 32-Bit / 64-Bit Mac10.8 or Higher 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.