That’s funny yet odd. I use floppy disk still to this day for my 200aml cnc plasma table. It’s the easiest method to load the gcode on. The rs232 is to much of a p.i.a. I used to have an issue when I used a USB floppy drive into my laptop. I ended up finding a pc with a dedicated floppy drive since then. I’ve had zero issues. Wich is also more surprising that floppy disks even work around the big ass high voltage transformer for the plasma power source. The big servo motor drives and the welders in the shop.