ITEM NAME:SATA Fan Hub 4pin PWM Hub PC Fan Large 4P Power Supply Splitter Adapter E4Y2 SATA Fan Hub 4pin PWM Hub PC Fan Large 4P Power Supply Splitter Adapter E4Y2 Applicable to 12V 4Pin fan (10 channels) Power Supply: large 4P interface power supply Support the fan start at the same time, solve the motherboard interface shortage, and deal with the back EVA double-sided adhesive, you can fix the hub on the chassis. 10-channel CPU5 interface supports PWM function, fan automatic speed control (PWM interface should be connected to the motherboard CPU FAN interface by the PWM connectin cable, the CPU FAN interface should support PWM function) Product Size: about 74 x 48mm (10 channels) Material:ABS Colour:Black.Applicable to 12V 4Pin fan (10 channels). The fan is a 4-pin PWM fan, which is very important. Connect the motherboard 4-pin fan interface, BIOS starts the PWM function.