Ergonomic design. 4 different height settings to ease strain on your neck and wrist. Optimal cooling performance. Full range metal mesh surface, built-in 14cm silent fan with step less speed control. Adjustable anti-slip holders for 9″ ~ 17″, easy front I/O port access. 2 port USB, 2 rear cable clips, side handles for cable management. Available in black color. Five angle stand. Large Fan Cooling pad. Fan Speed: 1400±10%RPM. Fan life: 40000Hours approx. A cooling pad moves air to draw heat away from the laptop quickly. A notebook / notebook cooler, a cooler pad reduces its operating temperature which is normally used when the laptop cannot cool enough. Coolers are designed to protect your laptop from overheating. A cooling pad moves air to draw heat away from the laptop quickly.