Backwards compatible between models PLA6457 and PLA5456?

Hello @NicoZ

Welcome to the forum.

PLA6457 supports the ITU-T G.hn standard, whereas PLA5456 supports HomePlug AV2.

They both use 128-bit AES encryption.

https://www.actiontec.com/what-is-the-difference-between-g-hn-and-homeplug/#:~:text=Reliability%20%E2%80%93%20HomePlug%20is%20limited%20to,powerlines%20and%20plastic%20optical%20fiber. and https://blog.wavlink.com/en-us/article/TechnicalNews/1c568429c979c83571f7662011b5aa4a.html talk about the difference between G.hn and Homeplug AV2.

Since G.hn includes HomePlug AV2 as I understand it, then the two devices PLA5456 and PLA5456 will likely be compatible with each other.

I hope that this is helpful.

Kind regards,

Tony