Posted before about my CPU not being detected on my MSI B450m Mortar max, contacted my local seller he told me that other buyers returned the same board due to the same
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For MSI B450M MORTAR MAX Socket AM4 DDR4 HDMI+DP 2×M.2 4×SATA III Motherboard
MSI AMD Ryzen B450M MORTAR MAX AM4 MicroATX Motherboard LN100731 | SCAN UK