Size and fit - Same size as standard 3.5 inch floppy drives, with the mounting hole position matching the floppy drive. Easy installation - Connects to the device via the floppy drive port for straightforward installation and use. File access - Supports files located in the root directory of a USB flash drive and in up to 999 folders. Compatibility and cautions - Not suitable for devices with ordinary floppy drives, but suitable for special devices and dedicated devices. - No technical support is provided; please be careful before purchasing. Use scenarios - Update firmware or software on a specialized device that uses a floppy port but reads from a USB drive in its root directory. - Perform maintenance on dedicated equipment by accessing files stored on a USB stick through the floppy port, including folders up to 999 levels deep. - Use in legacy or custom hardware setups where a compact, floppy-sized interface is needed to read USB drive contents without changing the device’s core IO.