CM Storm SF-15 - Gaming Laptop Cooling Pad with 160 mm Fan and Retractable Feet Accessory Type: Cooler Fan Numbers: 1 Fan Size: 160mm Fan Specifications: Material: Mesh +Plastic +Rubber Dimension: 384.6 x 291.9 x 50.8~69.8mm (15.2 x 11.5 x 2~2.8inch) Weight: 1.1 kg / 2.42 lbs Power: USB 5V DC USB: Port USB2.0 x 4 / MiniUSB x 1 / MicroUSB x 1 Fan Speed: 700~1200RPM +/- 10%