Fangrui Product Details Features: 1. The Violent Fan Adopts An All-black Abs Shell And The Wind Speed Is Adjustable From 0 To . It Has Two Power Input Interfaces: 5.5x2.1 Conventional Power Socket (12v Input) And Type-c Interface (5v Input, Power Bank Can Be Used). 2. It Has Two Power Input Interfaces: 5.5x2.1 Conventional Power Socket (12v Input) And Type-c Interface (5v Input, Power Bank Can Also Be Used). 3. Can Be Used To Drive 12v Server Violent Cooling Fans, The Wind Speed Is Adjustable From 0 To . 4. Plug In The 12v 5.5x2.1 Round Port Power Supply Or The 5v Type-c Cable. 5. Turn The Adjustment Potentiometer, And The Wind Speed Change With The Potentiometer. Description: 1. Wind Speed: Wind Speed Is Adjustable From 0~ 2. Power Supply Mode: Two Power Supply Modes, Regular Power Socket Or Type-c Input. 3. Input Method: Regular Power Socket Input 12v, Type-c Input 5v. 4. Voltage: 12v 5. Product Size: About 78 X 60 X 60 X 40mm 6. Power: 12w Color: Black Material: Abs Package Contents: 1 X Fan Control Module Note