@Vadym_Y Hi, May I ask how you have determined that the Archer AX21 hardware version V4 has a quad core processor? Different hardware versions of a certain router model might have different SoC's...

@NGSC Hi, Both, the Archer GX90 as well as the RE815X have the three bands 2.4GHz, 5GHz-1 and 5GHz-2. So, unless there is an unexpected bug in either firmware, creating a Tri-Band OneMesh network...

@ali612 Hi, What you can try is to set the 5 GHz of your Wi-Fi router to operate on channel 36 and then check again if the Archer T4E is able to see it. If it still can't see the router's 5 GHz...

@OldTom Hi, The answer to your question will depend on what model of Tapo switch you are considering. Tapo switches that support Wi-Fi can be directly connected to a Wi-Fi network, while Tapo...

@roadbuster Hi, You can download the user guide for the TL-WPA4220 KIT V1 from this webpage. It contains all the instructions. You can try the easy way to "clone" the Wi-Fi settings of the router to...

@Peter_O Hi, Does the connection problem occur only in Client Mode or also in Range Extender Mode and Hotspot Mode (WISP Mode)? What about the 2.4 GHz Wi-Fi? Can the TL-WR902AC connect to the 2.4 GHz...