There’s a bunch of brave souls here.
You’ll post what you got here, I’ve never seen or heard how lucky one could get???
If you search the forums for mystery desktop, you’ll see the previous sales. People may have commented on them. You’d just have to look around.
I received an HP Elitedesk 800 G5 i5 9500T 2.2 GHZ with 16 gig ram and 256 GB hard drive…so minimum specs with mini form factor. It does not have HDMI out, only VGA and Display Port, which is annoying. The condition looks good on the outside but I haven’t booted it up yet.
An adapter is $4 at the mothership.
https://www.amazon.com/DisplayPort-Adapter-Uni-Directional-Compatible-Projector/dp/B07QL9BHN7/
(Note that I am not staff. I just volunteer to help out on the forums.)
mine arrived with boot error, no recognizable disk. bummer.
Make sure you contact customer service. They’ll have some options for you. Here’s the blurb.
Please reach out to Woot! Customer Service. To speed things up, let them know if you prefer a return/refund or a replacement (if possible).
Please allow 24-48h for them to respond.
Self-Return: Items without Li-Ion batteries can be self-returned within 30 days. Go to your Order Details to get started. The return label will be emailed from UPS.
Browser: Use the Woot! Customer Service form.
Woot! App: Choose Account from the bottom navigation and then Support.
Note: Woot! Customer Service replies go to the email address on your Woot! account, not your Amazon login email if used/different.
(Please Note: I’m not employed by Woot, but I volunteer to help in the forums.)
BUYER BEWARE!!! I ordered the “203 Trading A GradeMysteryDesktop Mystery De Qty: 1 @ $189.99” in the description it said it was a “Windows 11 computer” and I gave it to someone for Christmas, and now Windows update shows “THIS PC DOESN’T CURRENTLY MEET THE WINDOWS 11 REQUIREMENTS” and it won’t do the latest Windows update. 
So, that probably means the reseller put a “Work around” version of Windows 11 because the hardware in the HP ELITEDESK 800G5 doesn’t support Windows 11. Reported it to customer service, we will see what happens. This is my second “mystery computer” fail from WOOT.
Sorry for the issue with windows 11. I’ve passed this on to our computer team.