Model R9-NBC-U2PK-GP(Black) R9-NBC-U2PS-GP(Sliver) Color Black / Silver Materials Aluminum, metal mesh, plastic, rubber Weight 0.65 kg (1.43 lbs) Dimension 346 x 282 x 60mm (13.6 X 11.1 x 2.4 inch) (W x H x D) Fan Dimension 80 x 80 x 10mm (3.2 x 3.2 x 0.4 inch) (W / H / D) Fan Speed 2000 ± 10% RPM Fan Airflow 31 CFM (each fan) Fan Noise Level 21 dBA Power USB 5V DC USB USB 2.0/1.1 x 1 (for power input) Power Consumption 0.36A, 1.8W Compatibility Supports up to 17'' laptops http://www.coolermaster.com/product/Detail/mobile/notepal-series/notepal-u2-plus.html