Suitable for charging a 2014 11" MacBook Air. The second USB adapter allows you to use an additional cable (for your iPhone or a USB -Connection for a Bluetooth speaker, a Kindle, etc.), making it very versatile. We also didn't notice that it was unusually warm. The only "cons", if I had to say, is that it's still relatively heavy (perhaps 75% heavier than the OEM 2014+ MagSafe charger. That means that if your outlets are "loose". , anything can fall out - either on its own or of course if you hit it. The easy fix in this case is to buy a short 3ft extension and just leave it on the ground :)