SSD é um tipo de flash
Mas eles se referem ao novo flash
retirado da descrição do air 2012
"Part of what makes MacBook Air so responsive is that it’s designed entirely around flash storage. Not only does this make MacBook Air much lighter and more portable than traditional notebooks, it also provides faster access to data and gives you instant-on capability. Available up to 512GB, this next-generation flash storage is up to 4x faster than a traditional 5400-rpm notebook hard drive and faster than the previous-generation MacBook Air.2So when you flip open MacBook Air, it starts up in seconds. Even after a month in standby mode, the screen springs to life. Apps launch quickly. And with no moving parts, flash storage stays quiet"