I have a Uno (third party) that I connect to my Dell laptop with no problems at all. But I've just received a Nano (also third party) that I just can't get to upload. After lots of interneting, I hit Windows normally-useless troubleshooting tool. That tells me that the USB device (the Nano) doesn't understand USB3 and I should plug it into a USB2 port. Unfortunately, being a new machine there IS no USB2 port.
Is Windows Troubleshooting lying? Is there a problem interfacing with a Nano via USB3?
Edit: Error message is:
stk500_recv(): programmer is not responding