I'm not to sure the specifics on your living arrangements, but most of the security devices I've seen that are cheaper then the equipment you are trying to protect are a joke.

Meet the disposable $10.00 36" bolt cutters (42" are available for $20.00), available from Harbor Freight and other fine proprietors of cheap, use-them-once and throw them away tools. Sometimes you can even buy the floor model.





Most of the security devices will only slow down a dedicated roommate (or thief) by seconds. Just talk to any University IT Department that has had problems with projectors and computers getting stolen out of classrooms.

There are other solutions.

I call my favorite way of solving problems like this, "Redefining the Problem." The problem isn't securing 4 computers and 4 monitors - the problem is replacing that equipment when it is stolen or damaged. The easy solution to that problem is to pick up a Renter's Insurance policy.