Check the motherboard itself for a printed model number near the CPU socket, RAM slots, or PCIe slots
Open System Information on Windows and look for BaseBoard Manufacturer, BaseBoard Product, and BaseBoard Version
Use Command Prompt and run `wmic baseboard get product,manufacturer,version,serialnumber`
Use PowerShell and run `Get-CimInstance Win32_BaseBoard | Format-List Product,Manufacturer,SerialNumber,Version`
Check the BIOS or UEFI setup screen for motherboard details
Use third-party tools like CPU-Z, Speccy, or HWiNFO
Check the original box, manual, or purchase receipt
Look at the motherboard label or sticker on the board
Check the model printed between the PCIe slots or along the edge of the board
If using Linux, run `sudo dmidecode -t baseboard`