Please check compatibility

Apr 7, 2018
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Can somebody please check my pc for any compatibility issues?(https://pcpartpicker.com/list/XJF7WD)
Also, my motherboard suports m.2 pciex4, can I put a m.2 pciex2 in there?
 
Solution
All looks good, except don't you think you are a bit short on storage? Typical build now is 256 Gb SSD and 1000 Gb HDD. Yes, you can put x2 drive into x4 M.2 slot, no problem here.