@Jonasaedin 

Hi,

You can just go to TP-Link's homepage for Powerline Adapters and set the filter for "G.hn".

https://www.tp-link.com/en/home-networking/powerline/?filterby=AND%7C6188

Only one product exists that would meet your description.

  @woozle thanks... i did see that kit but was not sure if that is a master/slave setup or if it can fit in together with the current PG2400 kit i have installed

  @Jonasaedin 

The "PGW2440 KIT" consists of one PG2400P (same as the two you already have) and one PGW2440 that has the Wi-Fi feature.

Two devices that come in the same box are usually already paired together, but you can just reset the PGW2440 and then "Pair" it with your existing G.hn Powerline network.

  @woozle ok it just seem like quite an expense buying both units if I only need th PGW2440

  @Jonasaedin 

That's true.

Theoretically, any Powerline adapter that follows the "G.hn" standard can be paired with any other Powerline adapter that also follows the "G.hn" standard. So if you can find another brand that sells single units, then generally that should work too. Just be prepared that anything that is specific to TP-Link might not work. For example, I doubt the tpPLC Utility and tpPLC App would show a Powerline adapter of another brand. That adapter would then have to be managed via the method offered by that brand.