Coolmax 12011 Xtype Notebook Cooler with 4 Ports X-Shaped Notebook Cooler with Dual 60mm Fans, Plastic housing Compatible with any size of notebook, 4-Port USB 2.0/1.1 Hub Effectively decreases the temperature of your notebook, thus making it more stable Increases notebook battery life, Excellent heat dissipation with low noise Power supplied via USB cable or optional adapter, Compact and adjustable design, great for carrying in a bag