
Daniel W. answered 06/17/19
Kind and Knowledgeable English, Latin, and Theatre Tutor
Typically when pluralizing a number, you do not need to use an apostrophe. For example, you would write "the 1990s" rather than "the 1990's."
Given the context of your sentence, it is clear that the "s" is a pluralization and not part of the model number, so I think you're fine to omit the apostrophe. If you're concerned about misinterpretation, you could always add a noun ("laptop" or "notebook" like you mention), but you would want to be sure it accurately describes the Dell 360.