Single addition to P7?
I'm somewhat frustrated. I ordered a two node Deco P7. After installing it, decided a third node would be optimal for our home. Could not seem to find a way to buy a single P7 no matter how I look. Is it possible to order a single addition for the P7?
I went to the Amazon page for the P7 and selected the smallest solution (single unit) and thought I'd found it so I ordered it. Now I discover it is actually an M5 and when you select that option on the P7 page it changes to an M5.
So, I assume the M5 doesn't support all of the features of the P7. The Amazon technician says it is compatible.
Questions:
1) Can I buy a single P7 unit? Where? How?
2) What do I lose from performance perspective by using an M5 in my existing P7 network?
Thanks,
Mark