Systems and methods that may be implemented to provide supplemental cooling air for a portable information handling system from one or more mechanically-adjustable cooling air supply outlets that may be positioned and/or repositioned at multiple different locations relative to a portable information handling system, such as notebook computer or laptop computer. In one example, the disclosed systems and methods may be implemented to have one or more mechanically-adjustable cooling air supply outlets that may be positioned and/or repositioned to align with differing geometries of cooling air inlet opening locations that correspond to different portable information handling system sizes and/or designs.