I bought this for my iMac a few months ago. Unfortunately my apartment got broken into and my iMac got stolen. This product proved to be useless because the lock was easily snapped free from the iMac, although the wire proved to be in-tacked. I absolutely wouldn't recommend investing in this product.
I love this product. I just got my MacBook Pro, but I have had this lock for a long time for my old PC. I'm glad that this product is so versatile. When I'm at the library, I don't have to be paranoid anymore about leaving my laptop alone. The lock is very light and easy to carry around.