Sienoc USB 3.0 Front Panel Floppy disk bay 20 Pin 2 Ports hub Bracket Cable Color Black 2 USB 3.0 type-A female ports; Copper conductor for maximum conductivity and reliability Plug and play driver less installation; Backward compatible with USB 2.0 and 1.1 Cable length: Approx. 50cm;Compatible with Windows 7/Vista/XP/MAC Fit with PC 3.5" bay properly with provided screws.;Downwards compatible with USB 2.0/1.1 It extend the USB 3.0 from mainboard to a idle floppy drive space.