Check the motherboard model printed on the board
Look near the CPU socket
Look between the PCIe slots
Look near the RAM slots
Check the BIOS or UEFI system information
Use Windows System Information
Use Command Prompt with `wmic baseboard get product,manufacturer,version,serialnumber`
Use PowerShell with `Get-CimInstance Win32_BaseBoard`
Check the motherboard box or manual
Inspect the sticker on the board
Open the computer case and read the chipset and model markings