If using USB, the SF-720 often emulates a COM port. This utility ensures legacy POS software (like old versions of Micros or Loyverse) can communicate via USB as if it were serial.
: When connected, the software can display live signal strength and quality bars on a larger screen for more precise alignment. solid sf-720 software download
Place the firmware file in the root directory (not inside a folder). If using USB, the SF-720 often emulates a COM port