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If your projector will be on an Audio/Visual cart, rather than ceiling mounted, we recommend purchasing a Kensington lock for the projector. Most projectors have a slot somewhere on the data projector that is designated for a Kensington lock. Attaching a lock to the data projector and securing it to the A/V cart will eliminate any thoughts of theft. In addition, it may save your projector from falling to the floor if the cart is accidentally bumped.