You never know when your projector's lamp might fail, so it is smart to carry a back-up on business trips or keep a spare one at the presentation facility. This replacement lamp from Dell is a life-saver, in case your projector's bulb burns out. This durable bulb will give you hours of excellent, crisp and clear brightness. This product has been tested and validated on Dell systems. It is supported by Dell Technical Support when used with a Dell system.