Features: Brand new and high quality USB cooling fan no need for any driver or any installation, you just plug-and-play. Your laptop can breathe easily with this notebook cooler. The USB cooling fan with compacts size, it is portable for you to use. With adjustable stand for 12-18 inch notebook, tablet, phone and user. USB cooling fan is designed with a flow fan, make sure the airflow is much strongers than a normal PC fan. USB cooling fan speed control(low/medium/high, three modes adjustment). Support hot swappable. Power by USB cable. USB cooling fan is the USB vertical and horizontal cooling fan with bracket, which is not only for devices but also for user cooling. Specifications: Material:Aluminium Type:Round/Square Wind speed gear: 3Gears Speed: 2100-2900RPM Noise value: 30-40dB Voltage: DC5V Round:Approx.65x65x296mm/2.56x2.56x11.65inches Square:Approx.69x70x298mm/2.71x2.75x11.73inches Package Includes: 1x Laptop Cooling Fan note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.