Sure! It's the Beelink with the 5500u. I am using steam link and everything is wired. No resolution problems, but I do have about one stuttering issue a week for a second or two. At 4k I had alignment problems that didn't make sense (everything was shifted 3 inches to the left) but my eyes aren't great so 1080p fine for me. Moonlight would probably fix it but I'm lazy.
HoloISO has been great. I had a Bluetooth issue where it wouldn't come back from sleep, but there was a setting I added in desktop mode that took about 3 minutes that fixed it right up. I use Xbox clone controllers or my old stadia controllers that I've set up for Bluetooth depending on what's closest (did I mention I'm lazy?).
Ask questions and I'll answer. I like talking about my setup.
The other comment answered your power question so I'll skip it.
Steam link works. It wasn't great over wireless for me but others have had success. I've got my house wired in every room.