The castle is well made and fits well on my Macbook Pro. The setting of numerical codes was done after two minutes. The castle is well located right on the laptop and has in my view sufficient protection against opportunist thieves. Of course it is probably possible with a good pliers relatively easy to cut the security cable, but that's probably similar in almost all laptop locks. The cable is long enough for my type of use (Library) and takes the Spirahlform a little space. On larger desks, the cable may be too short, for me, this is, however, no point of criticism. Detach the lock was something unusual in the first experiments, but after 2-3 times, it gets easier. In this price range for me the ideal castle.