With the stury engineering structure， this HH646 USB 2.0 Cooling Pad 1-Fan Cooler for 9"~17" Notebook/Laptop offers 5 different height setting for laptop users better viewing angle. It will ease the pains of neck and wrist for heavy users. With optimal cooling performantce， it is excellent to use. The metal mesh surface with built-in 14cm silent fan (without fan frame) performs ultimate thermal solution. Adjustable fan speed control &amp; on-off switch adapts to various working enviroments. The two anti-slip props with adjustable width settings design are specially for accommodating from netbook to large size notebook，including wide screen. It is a reliable choice.                                    Features            Easy front I/O port access for all types of laptopsGreat compatibilityOffer 5 different height setting for laptop users better viewing angleOptimal cooling performantceMetal mesh surface with built-in 14cm silent fan (without fan frame) performs ultimate thermal solutionAdjustable fan speed control&amp;on-off switch adapts to various working enviroments                                                            Specifications             Color     Black     <br> Brand     N/A     <br> Model     HH646     <br> Material     ABS & Plastic & Rubber     <br> Quantity     1 Piece     <br> Powered By     USB     <br> Number of Fans     1 Piece     <br> Diameter     5.51" / 14 cm     <br> Operation Degree     6.5-45 Degree    <br> Fan Noise     15dBA (Min.)    <br> Bearing Type     Rifle    <br> Fan Speed     700-1400RPM    <br> Fan Life Expectancy     40000 Hours    <br> Compatibility     9 inch-17 inch Laptop (Including Widescreen)     <br> USB Port     Two USB Port    <br> Maximum Air Flow     74.35CFM    <br> Dimensions     (14.56 x 10.43 x 2.28)" / (37 x 26.5 x 5.8)cm (L x W x H)    <br> Weight     11.53oz / 327g     <br>                                                             Package Includes            1 x Cooling Pad <br>1 x USB Cable (50cm) <br>2 x Anti-Slip Props<br>