|The model, sometimes the make, of a mboard in a desktop system is usually printed on the mboard's surface in obvious larger characters, often between the slots. |
It often has a mboard Revision or Version number printed beside the model number - R or Rev x.x or V or Ver x.x , x usually being numbers, sometimes letters are there too.
We need to know both.
The model is often also displayed on a logo (graphical) screen early in the boot, but it's often not as specific as the specific model number.