: Most users find success using a USB-to-Serial adapter .
is a legacy model, official downloads are rarely listed on main product pages but may still be accessible via support archives: Mutoh FTP/Support: Mutoh America Support Page mutoh sc 650 drivers downloadtrmds hot
If using a connection, you may need a driver for your specific USB-to-Serial adapter rather than the cutter itself. : Most users find success using a USB-to-Serial adapter