@Andrew36 Red led means that the signal strength is not very good, while cause you paired it with the TL-WPA4220 which is a junior product, you can verify the powerlink link rate via the tpPLC...

@Russell67 What about the 2.4GHz wireless speed and the wired speed from the TP-Link powerline adapter? Are they normal? What is the light status of the TL-WPA8630P kit? Try to change another wall...

@decel3000 What is the current network diagram? How do you connect these devices together? For the upstairs extender, the performance depends on the signal strength it can get from the main router....

@Norm55fr When you configure the RE450 on the web UI, can it detect the 5GHz of the Archer C7? Try to move them closer to each other and adjust the wireless settings of the 5GHz on C7, like the...

@Siam_Sadman Hello, it is not suggested to install the US firmware on the EU version product. From the current firmware version, it should be JP version, not EU. You can confirm the country version...

@jhondember24 Hello, the TL-WN8200ND V2 has official driver for Linux 2.6.18-4.4.6. For new kernel version, there is no official driver, instead, you can try to search online, like githubto to get...