Question about Alienware Aurora R10

5.

See this review: https://www.digitec.ch/de...

There are variants with Wi-Fi 6, but it doesn't say specifically so I would assume Wi-Fi 5.

And on a side note, I wouldn't recommend buying such a piece of plastic garbage:
https://www.youtube.com/watch (Review for an R10 from Gamers Nexus)

If you want to buy a pre-built PC, I would recommend something which uses standard components.
-> Joule, Mifcom, Megaport, Medion (I'm not 100% sure about the last two)