Features: Brand new and high quality 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. completely silent! Compatible with 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. Specifications: Material: ABS Interface: 4Pin Voltage: 5-20V Package Includes: 1PC x Fan Simulator note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.