The Surface serial number can help identify the Surface models. Usually, a serial number contains numbers and letters depending on manufacturers, products, and models. In addition, it can help get additional information about the product for replacements or compatible parts. Serial Number, also short for Serial No, SN, S/N, or SNID, is a unique number that can be used for identifying a product. Why You Need to Find Surface Serial Number
It provides 4 simple ways for the Surface serial number lookup.
If you are also trying to figure it out, this post of MiniTool is worth reading. A great many users are unclear about how to find the Surface serial number.