I have recently upgraded my old power line passthrough system to TP-PA9020P and I have two older wireless power line extender (TL-WPA281) that I try to join the new system with and found that they are not compatible with the about mentioned new system. When I try to pair it with one of the new adapters it would stop the whole powerline network, I am guessing that the "connection speed" is the main issue here? Can anyone verify this for me? And is there a way around it in order for me to use the TL-WPA281 with the TP-PA9020P?

Or do I have to buy a new wireless extender in order for me to extend my network wirelessly? If this is the case, which wireless extender I need that is compatible with the TP-PA9020P?