@NeilDeWheel Hello, Thank you for your detailed post. It is recommended to download this tpPLC Utility and customize wireless settings for powerline units....

@OJT8601 Hello, In theory, all the TP-Link powerline devices on sale can work together. In the real network environment, it would be better if we use the powerline devices with same powerline data...

@Kevin250 Hello , If you just put a UPS beside the powerline unit, it looks like the 2kw UPS causes some noise around the powerline and affect the communication between powerline adapters. Here is an...

@Spyko Thanks a lot for your update. If so, it looks like the problem is on range extender's Wi-Fi network, not the main modem. Please kindly observe the performance and enjoy the Internet

@8vius Hello, May I know do both powerline units have abnormal Led status? You could download tpPLC Utility on your computer and wired computer to the problematic unit, and see if the unit could be...

@ Barby_93 Hello, thank you for your detailed post, you could try some suggestions here for powerline unstable issue: 1. Please connect a computer directly to the main router by cable and confirm the...