sending 7520/3020 receiveData timeout after 400ms on chromebook

24divinea:
I have the same problem using chrome and I have tried different ports and boards but none of them work. I do not have an nano so I was not experiencing this problem on a different type of board .

Any ideas?

I'm having the same issue with my Chromebook and an Elegoo Arduino Duo which is supposedly 100% compatible.