What "wmic bios get serialnumber" actually retrieves?
run cmd
Enter wmic baseboard get product,version,serialnumber
Press the enter key. The result you see under serial number column is your motherboard serial number
the wmic bios get serialnumber
command call the Win32_BIOS
wmi class and get the value of the SerialNumber
property, which retrieves the serial number of the BIOS Chip of your system.