There are 6 total, 4 under the rubber pads/feet, and 2 under the stickers (should be able to tell where they are by a slight indention on the sticker (or try pressing down lightly on the sticker to find them). And they are torx 20 I believe.
Once you open it up, you'll need torx 10 for all the other screws.
Just remember, once you open it up, the warranty is voided.