Question RGB fans spin but dont have any RG

Jul 27, 2020
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hey guys,
today i swapped my pc case into a lian li pc 011 dynamic. when booting, the fans spun but have no rgb. i then figured out that there was a 3 pin header that i had to plug into my mobo, but my mobo (msi b450 tomohawk) doesnt have a 3 pin connector! any workarounds for this? please respond ASAP