Dshot&reg; 5.25" 20 Pin Motherboard to 4 port USB 3.0 + 2 Ports USB 2.0 Front Panel internal Bracket Hub Combo 2.1A Charging Port 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 4 USB 3.0 + 2 USB 2.0 ports on Front of computer.