A:AnswerJust go to google .com put in search bar windows 10 key I got mine cheapest i could get i got it for 5 bucks . Lots game sites have windows keys too for sale. I just look for best bargain Ive never had any problems . sccdeys is one site
A:AnswerMIne was a gigabyte gaming oc, but I'm pretty sure it could be any gpu brand based on what stock they have at the time. That probably applies to the LHR situation as well. Since they don't manufacture non LHR 3080s anymore (except for founder's edition) it's likely that the GPU will be LHR as well.
A:AnswerThe one I have is using an ASRock Z590-C/ac
1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) (ReDriver) (Supports ESD Protection)
1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (ReDriver) (Supports ESD Protection)
2 x USB 3.2 Gen1 Ports (Supports ESD Protection)