It is necessary to change water cooling, Ant silencer and oil cooling. It completely simulates the speed of 2300-6400, four wires, supports PWM speed regulation, and the voltage is 5-20v compatible with 99% machines in the market. The power consumption is less than 50 cents in 7*24 hours 365 days, completely silentPower IC is imported Italian semiconductor, single chip microcomputer and cable are imported goods, in order to stabilize at all costs, and also customized export quality incense inserted terminals, you will only be surprised when receiving the goodsCompatible with for S7,S9,T9,T9 ,S9i,Z9 MINI,Z9,DR3, Ant's machines are fully compatible, compatible with Shenma M1,M3, all-in-one machine, etc., theoretically as long as the fan can be identified, RED MAGIC quasi-speed device can be recognized normally.Note: Most new machines need 2 fans (for example, S9i,T9 ), so it is better to buy two at a time. In addition, the quasi-speed device just cheated the machine, saying that there is a fan, and the heat dissipation of the machine still needs other ways, such as water cooling, such as centrifugal fan...Colour: as shownMaterial: plasticPackage Contents:1 * Fan Speed SimulatorOnly the above package content, other products are not included.Note: Light shooting 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.