@Kevin_Z Thank you very much for your reply. The Notebook was the only device wired to the router. When I switch to wireless mode, the connection was fine. When the notebook wired to my another...

I just brought The AX73 for 3 weeks and just found that it cannot assign a valid IP to my notebook computer while the TPlink Archer C1200 can. Pls advise what should I change in the setting to fix...