20Pin Motherboard to USB 3.0 + 2.0 4 Ports Front Panel internal Bracket 4 5.25" Plug & play, no external power needed. Plug in USB 3.0 connector on PC motherboard. Backwards-compatible with USB 1.1 and USB 2.0. It extends the USB 3.0 from mainboard to a ide CD-ROM space. Easy solution for extending 2 USB 3.0 + 2 USB 2.0 ports on Front of computer.