Features: brand new and high quality This cable (full bracket) provides 2 external USB 3.0 ports connected to the motherboard. This allows you to add USB ports without occupying any PCI slots. USB 3.0 rear panel extension bracket to 20-pin connector cable (2 ports). Environmentally friendly pure copper wire and connector, with excellent electrical conductivity, high-speed data transmission. Dual USB 3.0 female to 20 pin connector. Easy to add USB ports without taking up a PCI slot Braided copper mesh and aluminum platinum double-layer shielding: can greatly reduce electromagnetic interference and radio interference Specifications: Name: Dual USB3.0 female to 20PIN PCI Baffle Line Color: Blue/ Black Conductor: 24+28AWG pure copper OD5.5 Wire standard: Awm 20276 Cable Length: approx 0.5m/19.69in Shield: Double Shield Outer Line Material: New PVC Material Applicable Equipment: Personal Computer, Industrial for Case Diy Interface: 2x USB3.0 20PIN Suitable for : Winxp/Vista / Win7 / Win8 32-Bit / 64-Bit Mac10.8 or Higher Note: The use of this adapter cable requires the chassis motherboard to have a 20pin expansion port. When the connected device cannot be used normally, please make sure that the 20pin is fully inserted and the system drive and the connected device are normal. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow slightly measuring deviation due to manual measurement. Package includes: 1 PC x usb3.0 to 20pin Connecting Line 1 PC x Bracket