Plug and play， no external power needed Plug in USB 3.0 connector on PC motherboard Easy solution for extending two USB ports on Front of computer It extend the USB 3.0 from mainboard to a idle floppy drive space Maximum Speed: 4.8Gbps(SuperSpeed) which is 10 times faster than USB 2.0(480Mbit/s) Backwards-compatible with USB 1.1 and USB 2.0 Cable Length:53cm. ; Package Included: 1 x USB3.0 Front Panel 6 x Screw NO Retail Box. Packed Safely in Bubble Bag.