Vktech 5.25 inch USB 3.0 Front Panel Floppy Disk Bay 4 Ports Hub Bracket Cable Extends the USB 3.0 from mainboard to a idle CD-ROM space, plug and play Maximum Speed: 4.8Gbps Backwards-compatible with USB 1.1 and USB 2.0 Form Factor: External 5.25" Drive Bay Cable Length: About 60cm