A very obscure module used inside of smart TVs, for a number of reasons -- one of them being the fact that it has exposed serial console pins.

If you're just starting out, stick to something easier like the Sony UWA-BR100:

https://h-node.org/wifi/view/en/1283/Sony-UWA-BR100-802-11ab...

There are a bunch of these 5ghz ath9k USB sticks, all of which are basically the same ar7010/ar9280 reference design from atheros with different plastic housings around them.