@800152 Hi, welcome to our community. I am afraid the broken PCB is the reason. Also, as far as I know, that is against the waranty&replacement policy. You may consider another brand-new.

@l0n3r Hi, welcome to our community. You may check the link speed on your computer and share the screenshot of the result here following this guide. What is the OS of your computer? It is suggested...

@Triggsy Hi, I updated my reply above. I do not mean it is not suitable. It is also suggested to read this article to know about about the 4G router.

@Steve00 Hi, welcome to our community. Please choose Standard as high priority mode for a try.

@JeromeDeco Hi, Deco X50, Deco X50-4G and Deco X50-5G are three different models. It is suggeseted to check the spefications and support page on the official webiste. You may consider Deco X50-5G for...

@pjs_gsy Hi, thanks for your detailed update. To assist you efficiently, I've forwarded your case to the TP-Link support engineers who will contact you with your registered email address later....