Open PowerShell or Command Prompt and type: wmic baseboard get product, manufacturer, version, serialnumber This will return the exact model name needed to search for documentation.
Since Intel produced hundreds of desktop boards, you must find your specific model to get the right manual. intel desktop board 01 manual
Look for a small barcode label on the board itself. Intel identifies its boards by an AA number (e.g., C28906-403) or a silk-screened model name (e.g., DH61BE) typically found between the PCI slots or near the RAM. Open PowerShell or Command Prompt and type: wmic