This is the latest addition to my collection. Ive wanted to buy one of these for a long while. Here is a brief description of the device taken from the designers website. The SDCard HxC Floppy Emulator is n universal 3″, 3″1/2, 5″1/4 and 8” Floppy disk drive emulator based on SDCard. Most of disk formats can be emulated bt this emulator.