writing - Is there a correct grammatical way to state computer model number in plural form?

For example if I said -

"I shipped ten Dell 360s this morning".

where Dell 360 is the model number and I don't want people to get confused by the "s", how should I write this?

Is it more correct to mention the word laptop?
For example :

"I shipped ten Dell 360 laptops today".

The reason I didn't do this was because I'm not sure if they are considered laptops or notebooks etc. Could an apostrophe be used?

Answer

In response to part of the original question: no, an apostrophe is not grammatically appropriate in this situation.

The generic word "systems," as mentioned previously, is really your safest bet.