Features: 1.100% brand new and high quality. 2.Plug & play, no external power needed. 3.Backwards-compatible with USB 1.1 and USB 2.0. 4.8Gbps(SuperSpeed) which is 10 times faster than USB 2.0(480Mbit/s). 5.Audio Interface is straight regular HD-AUDIO interfaces required to support HD-AUDIO motherboard audio interface to use. specification: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. 100% brand new and high quality. Plug & play, no external power needed. 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. : Condition: 100% Brand New Material: Aluminium Alloy Color: As Picture Shown Dimension: 14.8 * 15.3 * 4.cm/5.8 * 6 * 1.5in Product Interface: MIC/SPK port and dual-port standard A-type connector Maximum Speed: 4.8Gbps(SuperSpeed) Support System: WinXP/2003/VISTA/2008/Windows 7/WIN8 32/64BIT/MAC Package Weight: 438g/15.4oz Hardware Requirements: With 9PIN, 19PIN USB3.0 Interface A riser or support HD-AUDIO audio board With idle optical drive chassis Package List: 1 * Pack of Screws 1 * Front Panel 3 * Cables Note: 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.