A:AnswerAccording to our vendors list here: https://rog.asus.com/motherboards/rog-maximus/rog-maximus-xii-hero-wi-fi-model/helpdesk_cpu This model fully supports 10th gen processor. To use a 11th gen processor with this model, you may need a BIOS update.
A:AnswerNo, this motherboard has an Intel® Socket 1200 for 10th Gen Intel® Core™, Pentium® Gold and Celeron® Processors. The i9 9900K is a 9th Gen processor. Here you can see all the processors this motherboard is compatible with: https://rog.asus.com/motherboards/rog-maximus/rog-maximus-xii-hero-wi-fi-model/helpdesk_cpu/
A:AnswerAll motherboards need some form of graphics processing. If you dont want to get a graphics card, make sure that your processor has integrated graphics. This motherboard can power integrated graohics.
A:AnswerThis model comes with 1 x HDMI 1.4b. You can review the specification here: https://rog.asus.com/motherboards/rog-maximus/rog-maximus-xii-hero-wi-fi-model/spec
A:AnswerIt doesn't support 4.0 now, but it has the needed chip on the Motherboard for 4.0. So when you put a 11th, Gen, CPU on it with a New Firmware Update it will support PCie 4.0.
Intel doesn't want to let all this on right now and be responsible for telling this now.