Specifications • Material: Aluminum + ABS • Fan Dimension: 80 x 80 x 15 mm • Fan RPM: 0-2500 RPM • Air Capacity: 0-50 CFM • Voltage Rating: 5V • Power Cord Type: USB Cable • Application: For 15.6" laptop • 4x USB 2.0 Hubs • Product Dimension: 15.7" x 12.6" x 2.0" Features • New Innovation Vertical adjustable fan location • Two push-up storable spaces on the left and right side • Movable adjust knobs on the top for better cooling • Two 80mm silent fans for superior heat dissipation • Ergonomic design for user"s convenience to use • Power Switch function with blue LED