Powerline so far here has never mixed and matched. I get such from the same company or kits.
Hi,
I have a Comtrend powergrid 902 powerline adapter plugged into the router http://bt.custhelp.com/ci/fattach/get/1794464/1281104205/redirect/1/filename/White%20powerline%20userguide%20typeB.pdf
I also have a TP link powerline adapter http://uk.tp-link.com/products/details/cat-18_TL-PA411KIT.html
How can I pair the two together, I think they're both homeplug

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