user31281: The Arduino ATmega328 NANO uses COM3 on my WINDOWS 10 computer,
but COM3 is NOT available.
QUESTION:
Please explain in detail how I can change this Arduino NANO
to operate on COM4

user70044: In device manager, right click on the device and select "Properties". Then go to the tab "Connection properties" and click on "Advanced". There you can change the COM port number assignment for a particular device.

31281: <p>The Arduino ATmega328 NANO uses COM3 on my WINDOWS 10 computer,
but COM3 is NOT available.</p>
<p>QUESTION:
Please explain in detail how I can change this Arduino NANO
to operate on COM4</p>
 70044: <p>In device manager, right click on the device and select &quot;Properties&quot;. Then go to the tab &quot;Connection properties&quot; and click on &quot;Advanced&quot;. There you can change the COM port number assignment for a particular device.</p>
