4-pin version, can achieve automatic speed regulation through 4-pin fan interfaces, with a wide speed ranges of 7000rpm; wide speed ranges can provide optimal heat dissipation for various workloads This 97mm centrifugal fan is compact in size, with a 12V 3.8A 190CFM air volumes and strong wind pressure It is widely used for local heat dissipation and airflows control in electronic products, instruments, household appliances, and other devices Widely used: designed specifically for providing high airflows in small spaces that require heat dissipation or ventilation Suitable for printers, players, small communication devices, PC CPU servers、 networks storage devices, and can be used as replacement for any electronic product 4-pin interfaces, red positive levels, black negatived levels, yellow speed measurement, basket speed regulation function, wire length of 33cm, mainly used for computer, server cooling, and more Maintain continuous operations time of 18000 hours, maintenance double ball bearings, long service life, with sufficient heat dissipation air volumes and air pressure, Manufacturer: Kaeltsyn