Parameters of Giryriz PWM Fan Splitter Cable (Hub): Cable Length: 43CM/16.9IN Fan Plug: 2510-2Pin (For PWM speed regulation) Power Supply Plug: SATA/Molex Rated Voltage: 12V Rated Temperature (Max): 80? Insulation Material: PVC + Woven net About Cable: 24AWG wire, high quality tinned copper material. Product Function: Converts 4-Pin to one 4-Pin and four 3-Pin. Important Attention: 1) There are two plugs on the male end of this fan power extension cable, one is the power supply interface (SATA/Molex), which is plugged into the power supply, and the other is the 2-Pin speed measurement and temperature control (PWM) function, it must be plugged into 4-PIN CPU FAN socket of the computer motherboard, so that all the fans can realize the synchronous temperature control function with the motherboard at the same time. 2) The motherboard can only provide the accurate speed measurement value of one fan, so only one of the fans (4-Pin Socket) has speed measurement function, but all the fans have PWM temperature control function.