Peter

Hi Yazan, I would like to share my experience with you. I there are several different USB to RS485 converters, many of them are based on the CH341 chip. Mine is transparent blue and has a 5 screw connector: 5V GND GND B A I installed a windows driver for this CH341 based converter. The driver sets up an old fashioned COM port, (eg COM5) So, I believe the windows driver for the CH341 chip needs to be installed first. Then do a port scan within Realterm. Don't forget to click the change button I Was...