Features 1、Super quiet fans create a noise-free & interference-free environment for you. 2、Ergonomic stand with 6 adjustable height settings to play games or watch movies at the most comfortable angle. 3、6 Built-in fans (70 x 70mm) with blue LEDs. Strong, durable but lightweight construction with metal mesh front. 4、Dual USB hub allows for connecting more USB devices. The stopper on the front to prevent laptop from falling off. Box on the bottom for storing the USB cable. 5、+/- buttons is used to adjust the fan speed and LCD display shows the wind speed rating. The light button is used to controll 6 fans(Press the switch to select Left 2 fans working, Middle 2 fans working, Right 2 fans working or all 6 working together.) Specification Features: Super quiet fans create a noise-free & interference-free environment for you. Ergonomic stand with 6 adjustable height settings to play games or watch movies at the most comfortable angle. 6 Built-in fans (70 x 70mm) with blue LEDs. Strong, durable but lightweight construction with metal mesh front. Dual USB hub allows for connecting more USB devices. The stopper on the front to prevent laptop from falling off. Box on the bottom for storing the USB cable. The + / - buttons can be used to adjust the fan speed and the LCD display will show the wind speed rating. The light button can be used to controll 6 fans(Press the switch to select Left 2 fans working, Middle 2 fans working, Right 2 fans working or all 6 working together.) Specification: Material: ABS Noise: 21dBa Fan Size: 70 x 70mm (6PCS) Wind Speed: 1200 ± 10% RPM Maximum Air Volume: 74.35CFM Rated Current: 0.22A Input Power: 1.75W Size: 38 x 30 x 3cm / 14.96 x 11.81 x 1.18inch Package Weight: 1190g Quantity: 1pc Fitments: For 17inch and below 17inch notebook computers, including Apple MacBook, MacBook Air and MacBook Pro, Samsung, Lenovo Thinkpad, Dell, HP, Acer, Asus, etc. Package included: 1 x Laptop Cooler Pad Base 1 x USB Cable