A:AnswerThere are multiple HDMI ports on the back, so you should be fine. You will need to switch between them when you want to change. And depending on the Mac you have, you may need a hub to do HDMI out.
A:AnswerIt should not make any difference the brand of monitor and PC. They can be the same but in most cases, users have a different monitor model from their PC/laptop.
A:AnswerI am no expert, but it looks like the XV272U Pbmiiprzx is WQHD (2560 x 1440) resolution. This monitor claims to also be a Pbmiiprzx, but is FHD (1960 x 1080).