Hi, all. This is my first post, I recently bought a used MBA, I always want one when it first came out, finally wait until now because of the big price drop My first mod to my MBA is to upgrade the hard drive. I wasn't pay much attention when I purchase this replacement hard disk, didn't notice the MBA only takes 5mm height, as most 1.8" in the market are 8mm. But since it's in my hand right now, I decided to put it on see if the MBA recognizes it. Not too much surprise, leopard installation went very smoothly. After the installation, the available space is about 95gb. And because of the 5400rpm, it feels faster. Too bad the bottom won't close because of the height of this drive. But at least this gives me an idea, and I know there's a Toshiba 1.8" 120gb 4200rpm 5mm out there, and it should fits perfectly in MBA. Anyway, I'm still debating myself rather getting this Toshiba drive or a Samsung 32gb SSD(Same drive as used in the Rev.A SSD version, but different capacity) As the price of these two drives are pretty much the same (around $150 range) I have another computer for my main work, so I'm toward getting a 32gb SSD Here are some picture taken from the iphone.