For an MacBook Air under Apple’s One-Year Limited Warranty, Apple warrants against defects that arise from service performed for 90 days from the date of service or for the remaining period of the warranty, whichever provides longer coverage for you. For an MacBook Air not under Apple’s warranty, Apple warrants against defects that arise from service performed for 90 days from the date of service.
The 11" MacBook Air carried the desirable essential attributes of a netbook, but without the drawbacks of a slower processor and less capable operating system, albeit at a higher price. At the low end, Apple introduced the iPad—a different form factor than the netbook, but with improved computing capabilities and lower production cost. Both of these led to a decline in netbook sales, and most PC manufacturers have consequently discontinued their netbook lines in response. Capitalizing on the success of the MacBook Air, Intel promoted Ultrabook as a new high-mobility standard, which has been hailed by some analysts as succeeding where netbooks failed.
NOW, though the product title DOES say that it comes preinstalled with EL CAPTAIN (or whatever), mine already came with the SIERRA update. It had Sierra Version 10.12.3 and in the app store, you can update it (FOR FREE) with the May 2017 recent Sierra 10.12.5 update! IF yours comes in with EL CAPTAIN, you can update it FOR FREE to the 2017 Sierra update - do not worry! Lol.
Apple is the king of consumer laptop tech support, and the company added to its repertoire in the past year. In addition to answering questions via social media, live online chats, its support app and phone calls, the company began posting tutorials to a YouTube channel in November 2017. These options flank the company's existing Genius Bar, which still stands out as one of the few ways users can get in-person support directly from a laptop-maker.