Cooling Pad Specifications: Cooling Fan Material: Iron net+engineering plastics Power Supply: USB DC 5V Wind: 38CFM USB Ports: 2 Fan dimensions: 6 fans, 70mm (2.76inch) Rated voltage: USB 5V DC Interface: USB2.0/1.1X1 Current: 0.22A Fans quantity: 6 NOTE: Suggest fold the two feets of the cooling pad while you use it, if under your PC does not have any anti-slip mats. Package Includes: 1 x Laptop cooling pad 1 x USB cable