A:AnswerThey are 3.0 (for now).
Intel will not have PCIe 4.0 support until Rocket Lake (11th gen CPUs)
It's possible this motherboard will enable support for PCIe 4.0 with an 11th gen CPU (for example, an i5-11600K)
And FYI, no cards "require" PCIe 4.0... All PCIe cards including the RTX cards are backwards compatible with all PCIe slots down to PCIe 1.0
A:AnswerGo under MSI.com and they have the WIFI card built for this mother board and then your good to go to be honest you can get the same motherboard same price with Wi-Fi on it just a reminder take care!!
A:AnswerHello Nick2648. Thank you for your question. Yes, the MSI-Z490-A PRO motherboard is fully compatible with the Intel® Core™ i9-10900K Processor.
You can find the list of motherboards compatible with the Intel® Core™ i9-10900K Processor here:
***https://compatibleproducts.intel.com/ProductDetails?activeModule=Desktop%20Processors&pcsr_num=i9-10900K***
Thank you for choosing Intel!
A:AnswerThere are 4 RAM slots, max supported is 128GB. Meaning you could have 4 x 32GB sticks, which honestly would be absolute overkill for a majority of users and expensive to boot.