1.This product is suitable for cooling the for host 2.The product has three built-in fans, simple installation, convenient operation and fast cooling speed. 3.Plug and play does not require cumbersome installation steps. It can be used by directly inserting the product into the USB interface on the back of for host. 4.Starting the fan automatically saves the steps of manually s for Cooling Fans for Cooler for Heat Sink for Fans for Cooler Heat Sink tarting the fan after each startup, so as to prevent the fan from blocking the air outlet of the host and affecting the heat dissipation of the host due to forgetting to manually start the fan. 5.The blue LED light has a sense of science and technology. The built-in blue LED light refracts the blue flowing light with the rotation of the transparent fan blade when the fan is turned on. Specifications: Working voltage: DC 5V Working current: 0.5A Fan speed: 5500 1100 RPM Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour: white Material: ABS Package Contents: 1 x cooling fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.