MSI Because post air mail refuse the goods with battery,In order to successfully pass security,the goods we ship out not include CMOS battery,hope u can understand. B450M MORTAR AM4 AMD Motherboard -
What Is CMOS?
CMOS battery location on MSI TRX40 Pro WIFI? | MSI Global English Forum - Index
where the h... is the cmos pins on my msi B550 a-pro | TechPowerUp Forums