Sometimes abbreviated as model or model no, a model number is a unique number given to each product made by computer and computer hardware manufacturers. Model numbers allow manufacturers to keep track of each hardware device and identify or replace the proper part when needed. Model numbers are often found on the bottom, back, or side of the hardware product, in the case of some mobile phones and other mobile devices the model number may be in the battery compartment.
Tip: When using your model number make sure you're using the model number off of the product sticker, instead of the generic model number on the front of the computer. Some companies such as Hewlett Packard and Dell may have a generic Product number such as Presario CQ60, but on the sticker have an actual model number as cq60-419wm. This is extremely important when looking for drivers since a company may have multiple models each with their own hardware configuration.