Made of high-quality material, durable, firm and stable for us to use.To replace the old, broken or damaged one with this new one.This cooling fan hub is equipped with the independent speed controller for you to adjust.Professional high speed regulating circuit, high performance, support for SATA/4Pin interface.Cooling Fan Speed Controller only, other accessories demo in the picture is not included!Specifications:Item Type: Cooling Fan Speed ControllerSupply Voltage: 12VInterface: SATA/4PinOptional Type: SATA, 4 PinColour:blackMaterial:metalPackage Contents:1 x governorOnly 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.