This article explains all the different methods you can use to find the model number of your Dell laptop.
Find dell laptop model number
Product labels affixed to the laptop case or cardboard packaging may contain the model number of the Dell laptop. The placement of the product label may vary. According to Dell Support, look in these locations:
The Reg Model with an alphanumeric number indicates the specific model. The label shows other alphanumeric information such as service tag, country of origin, IEC (Information Technology Equipment Safety) number, Dell Part Number (DP/N), etc.
The Service Tag is an important number. You can find your Dell support options using the Service Tag, Express Service Code, or Serial Number.