NOTE

If your scanner does not work with your Clover device right out of the box, you may need to program it by scanning a barcode needed to add a carriage or return line. Check your scanner’s user guide for the barcode and scan it. Your scanner should work with your Clover device after scanning.

Reference Site: https://help.clover.com/faq/which-external-scanners-are-compatible-with-clover-devices/