First of all, the product picture is misleading. It does NOT come with a locking cable as the picture indicated. Nor is there a cable available by the same manufacturer. Second, when we did purchase a "compatible" laptop cable, the hole in the cash box was too deep for the lock to work - we had to get a pair or pliers and bend the metal bit inside the hole in order for the cable to work. Finally, the lock was defective, and we had to try the lock open with a screwdriver in order to retrieve our cash. This lock box was a p.o.s.