The MacBook Air was the first subcompact laptop offered by Apple since the full-featured 12" PowerBook G4 was discontinued in 2006. It was also Apple's first computer with an optional solid-state drive.[14] ArsTechnica found "moderate" performance improvements of the 64 GB[note 1] solid-state drive of the first-generation Air over the standard 80 GB hard drive in tests. On October 14, 2008, new models were announced with improved capacities of 128 GB SSD and 120 GB hard drive.

Service — We are committed, first and foremost, to serving our customers, which is why we have developed the best service organization in the business, complete with 24-hour guaranteed response if your machine is down.  We understand that our customer base is the life of our business and we strive to maintain long-term, meaningful relationships with each and every one.
Before rolling out the paid chat support, Apple had to develop a new web payment system that would allow it to accept payments through chat and keep user info secure when transferred between support agents, according to our sources. Using the new web payment system, we’re told Apple plans to offer the ability to set up hardware repairs and replacements that require a hold on a credit card or pay per incident fee via chat support. Rather than having to call in, users will be sent a link that’s live for 24 hours in order to complete the payment.
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