[xdude]

Arnt almost all Dell laptops have the model number written in one of the corners of the monitor? I may not be sure, mostly about the latest ones. But fact: you can turn the laptop over and unscrew the baseplate and near the fan there will be a stamp with all the details you need. So I'll rather do that than installing a probable adware/botnet to just find out the model of my laptop

Usually Dell has it printed just left side of Touch pad. But it disappear after a while. Dell doesn't put anything on Monitor I don't know about other brands. Anyway I prefer not to touch hardware of unscrew a  laptop without a really big issue. Speccy is very tiny tool used even by professional hardware technicians. It has no ads or anything anything. I have been using it for more than 5 years so I know about it well. It's one of those software I always install when Setup a computer.