USB FANS 5V: 5V 120mm USB fans for cooling various electronics devices such as router modem desk computer PS3 , it can reduce the components temp to extend unit life. SPECIFICATION: Rated Voltage: DC 5V, Rated Current: 0.4A, Speed: 2000RPM (), Air : About 100CFM (). SPEED CONTROLLER: 120mm Dual USB computer pc fans with speed controller, you can adjust high speed 2000RPM(100CFM) to control different and noise level. FAN FILTER: Any 120mm USB fan with fan filter to keep your devices clean. Colour:black Material:plastic Size:24 x 12 x 5cm Package Contents: 1 x Cooling Fan for Router Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 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.