Question Help with 4 GPU motherboard

Jun 6, 2021
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Hi everybody. I need to build a 4 GPU (5700xt or RTX 3070) mining rig with a ryzen 7 3700x CPU.
I am going to use a cosmos II case and 32 GB ram. Can someone help me to choose a motherboard for this purpose?
I am not a techie guy so I need some sort of plug-and-play solution. I can do a few technical things if advised correctly.

Would really appreciate the community here for help.