Macs are assigned hardware models according to the release date, such as “Late 2008”, “Mid 2009”, “Late 2010”, “Early 2011”, “Mid 2013”. Normally, you don’t need to be conscious of it, but you will need it when installing device drivers and when searching for devices (parts) such as compatible memory and batteries.
How to check the model?
Show About This Mac
Check the model (type)
In this example, “MacBook Pro (Retina, 13-inch, Early 2015)” is the model.