Abstract: A device for conveniently supporting a laptop computer on the lap of the user thereof, and more particularly to such a device which is substantially universally adjustable for supporting the computer in a preferred and optimal position for use. In its broadest aspects, the device is a portable, adjustable laptop (notebook) computer support. The device can also be used to support other portable data devices that have keyboards, such as pen-input-type computers and personal, electronic data organizers. The device is highly advantageous in that it provides for conveniently supporting a laptop computer on the lap of the user thereof in a preferred and optimal position for use even when the user is seated in any one of a wide variety of sub-optimal positions. The device is further advantageous in that it is lightweight, portable and substantially universally adjustable within a defined range of support surface angles.