Convert an unused 3.5'' floppy drive space into 4 USB 2.0 interface Convert an unused 3.5'' floppy drive space into 4 USB 2.0 interface Convert an unused 3.5'' floppy drive space into 4 USB 2.0 interface Plug and play, don't need the power supply 4 USB 2.0 plugs enable 4 devices fast charging and high speed transferring simultaneously, convenient and efficient, effectively save your time Sturdy metal construction endures wear and tear, ensuring long-term use This front panel works with mainboard or riser card with USB2.0 9 pin interface and a mainframe with a vacant 3.5'' floppy drive