@Hizzzon AX12 is a dual band wireless router: IEEE 802.11ax/ac/n/a 5 GHz IEEE 802.11n/b/g 2.4 GHz It can provide dual band wireless connectivity in both wireless router mode and access point mode.

@TheFriendly Test the speed from a wired device and make sure that QoS feature is disabled:

@Rich---- I understand your point regarding different proprietary mesh technologies. Many network equipment manufacturers have developed their proprietary mesh technology as well. AFAIK what TP-Link...

@MarcoDzz That's not the way that REs work - see more details in this thread.

@Barra8 If you change the modem then it's better to reset your RE650 and re-configre it from scratch. To reset the RE press the reset button for about 10 seconds.

@satimis As long as you have an access to the router web management interface (via wired computer) you can check what's the wireless password, no matter if you changed it or not. If you don't...