The Alienware M17x R4 laptop runs hot. I opened mine up and blew out any dust and reapplied the thermal paste. Looking at the laptop it seemed to be almost too low to allow good airflow at the fan intakes. So I designed a riser to fit around the existing feet at the back and double the height.

This riser lifts the laptop clearance from 4mm to 8mm at the back.

Installation note: Alienware lettering faces down.