@mjwndave The TL-WPA4220 kit supports wifi function, with main adapter connected to the router by wired cable, the extender unit can access internet once they are paired. The extender unit will...

@DANIK1956 Click here to get the download link of the firmware for TL-PA4010. Have you tried to upload the NVM file to give it a shot? What will happen then?

@laserbeam Yes, from the led status, all the 3 powerline adapters are working fine. And you can confirm whether you can get internet from them with wired cable connected.

@Vea You are welcome, take your time to give it a shot. Any further problem, please let us know.

@RafaelLomba Thanks for your reply. To help fix this issue, our engineer will email you later. If you are willing to do further troubleshooting, please check your inbox. Thanks for your support and...

@Zyngi Try to disable NAT boost on the web UI of Archer C1200 first. Then you can try to access the HDD via FTP to give it a go. Please show me a picture of the transfer speed as well.