ballscrewbob:
Watch out for USB 3.0 port issues !
It is a known issue but not with all USB 3.0 chipsets.First and easiest work around is to insert a decent powered USB 2.0 HOB between the USB 3.0 port and the Arduino.
Second work around is to roll back a microsoft driver to the motherboards own driver.
Third fix is to change the USB settings in the BIOS to the middle speed compatible with USB 2.0.
COM9 is actually USB3.0. I could successfully make loop back test with both ports. But only upload code through COM6.
But my Arduino UNo works with usb3.0, here it detected as connected in COM8
Why's that?
ptnapivoski:
Set the environment variable DevMgr_Show_NonPresent_Devices to 1 so that you can see disconnected devices when displaying hidden devices in Device Manager.By that way you can “remove” disconnected devices. It is a good thing to do a clean up in registry too.
Disconnect devices. Remove every COM port disconnected. Connect again.
Can you tell me how to do that?