I'm interested in running an AP capable Wifi card, ideally with DBDC support, in the r5s.

There's a M.2 B+M MT7915DAN available from AsiaRF that looks like it would plug in directly without any adapters. Other suitable cards that I've seen are M.2 A+E or E key, or miniPCIe so would require some adapters.

Power and heat with MT7915 may be a problem however. 3.3V at 2.5A is required.

Does anyone have advice and experience on this?

Thanks
Daniel