Description:Because now more and more USB devices, USB port on the chassis is not enough time! You can use this device directly put 19PIN interfaces, 9PIN interface and audio on the board turn into a 2 USB2.0 + 2 USB3.0 interface output headphone and microphone jacks, optical drive installed in the idle position. This provides front facing USB interface and audio interface.Features:100% brand new and high quality.Backwards-compatible with USB 1.1 and USB 2.0.4.8Gbps(SuperSpeed) which is 10 times faster than USB 2.0(480Mbit/s).Audio Interface is straight regular HD-AUDIO interfaces, required to support HD-AUDIO motherboard audio interface to use.Specification:Condition: 100% Brand NewMaterial: Aluminium Alloy Color: As Picture ShownDimension: 14.8 * 15.3 * 4.cm/5.8 * 6 * 1.5inProduct Interface: MIC/SPK port and dual-port standard A-type connectorMaximum Speed: 4.8Gbps(SuperSpeed)Support System: WinXP/2003/VISTA/2008/Windows 7/WIN8 32/64BIT/MACPackage Weight: 438g/15.4ozHardware Requirements:With 9PIN, 19PIN USB3.0 InterfaceA riser or support HD-AUDIO audio boardWith idle optical drive chassisPackage List:1 * Pack of Screws1 * Front Panel 3 * CablesNote:This panel is mounted to the chassis drive position, that is 5.25 inch drive size. If this panel into the USB2.0 interface, can not speeded when use USB3.0 device.