Hi all, I just picked up an a500 over the holidays and LOVE IT! For my first post on this very cool forum, I thought I'd share a nice find on e-bay: slim black bluetooth wireless mouse for Macbook win 7 xp vista laptop travel | eBay FYI - I am not the seller. However, I wil give him two thumbs up. He was great to deal with, shipped it on time and it works perfectly on the a500. Matter of fact, I bought 2 of them.