Targus AWE01US1 Chill Hub XC for Laptops from 13.3-Inches to 17-Inches Integrated 4 port USB 2.0 hub allows you to connect devices while keeping your laptop cool Variable speed dual fans provide unsurpassed cooling and prevent overheating Three level height adjustment allows the user to select the most comfortable and ergonomic setting Protects your work surface from heat generated by laptops Supports laptops from 13.3-Inch to 17-Inch