Specifications: Welcome to Computer Mall Come and choose gifts for your computer! The cooling fan is mini size, high speed and low noise. Infinite speed switch can adjust the air volume. Extend the service life of your notebook. Large air volume, easy to operate. Item Name: Laptop Cooling Fan Material: ABS + Electronic Components Rotational Speed: 1500-3000RPM±10% Rated Speed: 1350RPM±10% Rated Voltage: DC 5V Air Flow: 109.3CFM±10% Current: 0.4±10% Bearing Type: Dual Ball Bearing Noise: 15dBA (Min.) Features: Portable, High Speed, Fine Workmanship Power Cord Length: 60cm/23.62" (Approx.) Product Size: 175mm x 86mm x 52mm/6.89" x 3.39" x 2.05" (Approx.) Cooling Fan Size: 75mm x 75mm x 25mm/2.95" x 2.95" x 0.98" (Approx.) Notes: Begin to use, in order to fast cooling, open to the largest (3000RPM), temperature drop down for about 15 minutes, then transferred to the minimum (1500RPM) remains constant. So that we can keep in a reasonable working temperature, and can prolong the service life and lower noise. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Laptop Cooling Fan (Laptop Not Included) 1 x USB Cable 3 x Air Guide Sleeves 1 x Anti-Slip Cushion 1 x Adhesive Tape