LUXA2 M2 Aluminum Clamshell Design Notebook/Laptop Cooler- LCLN0002. Compatible with MacBook 13", MacBook Air 13", MacBook Pro 15". Clamshell design- The Silent "Slot Join Hinge" is crafted with precision and reduces M3-Air's size by folding it. Ventilation Design- M2 is equipped with a 50 x 50 x 10 mm silent fan and heat absorbing materials. M2 is portable and does not require the use of additional power adaptors.