If i use the cat 6 lan cabel I purchased from computer mainia on the AX1800 Dual-Band Wi-Fi 6 Router i have problems with connection but no internet issues and the moment I put the cat 5 cables as replaced with the computer mania cat 6 cabels everything works perfectly again. It was a huge waste of money and delivery money. I will not advise ANYONE to buy any of the cat 6 cabels at computer mania. As a 25 year veteran in the computer industry I tested 5 routers with the cabels and 4 different computers and all gave the same result the moment I plugged in the short cabeles direct. I'm not even going to make a hole in my roof for the 20m cat 6 cable as there is 0% way that ANY of the positive comments/stars are true. It's self or computer generated.