Hello, I have the latest MacBook Air (MD711LL/B) with 128 gb hard drive. I want to replace/upgrade the current hard drive. I've done it before with my previous MB Pro's, but this is my 1st time with a MB Air. Can you tell me the specs that I need to look for? I've only shopped via Newegg in the past, any other suggested sites? When I did this for my Macbook Pro - I had to shop for something like this "500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive "....I'm hoping I could get a similar advise as to what to look for when I replace my MacBook Air's hard drive.