Sienoc USB 3.0 Front Panel Floppy disk bay 19/20 Pin 4 Ports hub Bracket Cable Color Black Type: 5.25 Floppy Disk Bay USB Hub Bracket Input Interface: 20Pin to USB3.0 Port , Output Interface: 4 x USB 3.0 Port, Supply Interface: 4Pin Power Port Compatible with USB 3.0 USB 2.0 USB 1.1 Maximum Speed: 4.8Gbps(Super Speed) which is 10 times faster than USB 2.0(480Mbit/s) Plug in USB 3.0 connector on PC motherboard 5000 times Plugging test and 100% Electrical test to ensure the high quality. Cable Length: Approx.80cm Plug & Play 4Pin Power Supply Color: Black with Sliver Dimension of Front Panel: 14.8(L) x 15.5(W) x 4.2(H)cm