A writer connected a $20 USB 3.5-inch floppy disk reader to an Android phone and found it worked immediately without any setup. The experiment also succeeded on Windows 11 and MacBook Pro, but failed on iPhone and iPad, likely due to file format compatibility issues. High Density 3.5-inch floppy disks hold 1.44MB, and the writer tested transferring a Super Mario World SNES ROM (512KB) to a floppy disk in seconds.
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I'm surprised the 3.5-inch floppy disk reader worked right awayIf you have old 3.5-inch floppy disks lying around, you might find this accessory useful183 Impressions