The Rotan laptop base stand and cooler is equipped with a medium size 160mm silent cooling fan. The unit is completely formed out of lightweight plastic, keeping the unit strong and light.The ergonomic design and anti-slip features of the Rotan provide comfortable computing experience. There is no need for an external power adapter, powered by your laptop’s USB port (cable included) the Rotan is a ‘plug and play’ ready product. Compatible with 12-inch up to 15.4-inch laptop computers, the Rotan is the best universal choice from Spire – Powered by Innovation