Some ShieldBuddy boards seem to have 2 COM ports in Arduino! Nov 23, 2016 9:39:03 GMT Quote Select PostDeselect PostLink to PostBack to Top Post by mjb on Nov 23, 2016 9:39:03 GMT We have found that sometimes the Arduino IDE detects two COM ports for the ShieldBuddy. Typically the IDE reports ShieldBuddy If this happens, please choose the higher numbered COM port.