Alleged MSI tech support email states older 300-series motherboards won't support AMD Ryzen 3000 processors - NotebookCheck.net News
MSI USA
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MSI announces 24GB & 48GB DDR5 memory module support across Intel 700/600 motherboards - VideoCardz.com
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MSI MEG X670E ACE AM5 E-ATX AMD Motherboard - Newegg.com
MSI Confirms AMD Ryzen 4000 'Zen 3' Support On 400-Series Boards