Look for a sticker on the computer case (usually the back or side).
If you are using a legacy Lenovo desktop—such as the or M58p —chances are your system is built around the Lenovo N1996 motherboard . This motherboard, often based on the Intel Q45 Express chipset, was a workhorse of the late 2000s. However, as operating systems evolve, finding and maintaining the correct Lenovo N1996 motherboard drivers becomes critical for system stability, peripheral support, and performance. lenovo n1996 motherboard drivers
To download the correct drivers, you must first identify the actual or Machine Type (e.g., ThinkCentre M71e, Edge 72, or IH61M). How to Identify Your Motherboard Model Look for a sticker on the computer case
The most reliable way to get drivers is through official channels: Drivers & Software - Lenovo Support as operating systems evolve