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|Notebook Cooler Pad + 4 Ports USB 2.0 Hub. Slim and Smart design with large, high-performance and quiet built-in 3 fans. Silver color, USB 2.0 interface, compatible with USB 1.1. Draw notebook's heat away and exhausts the heat through a slot. Reduce the overall temperature of your notebook. Convenient, reliable and comfortable to carry. No extra driver needed for installation. Powered by USB bus. Specifications: USB connectors: 4 type A connectors, 1 mini USB 5-pin. Support high-speed (480 Mbps), full-speed (12Mbps), and low-speed (1.5Mbps) transfer rate. Connect up to 127 USB devices. Air Flow: 28 CFM. Speed: 1500 rpm. Noise Level: 25db. Rated Voltage: DC 5V. Power Consumption: <0.9W. Rated Current: <180mA. M.T.B.F.: 20,000 hours. Fan: 60x60x10mm (LxWxH). Dimemsion: 300x230x16.8mm (LxWxH)|