ITEM NAME:Pc 8 Channels Fan Hub 4 Knob Cooling Fan Speed Controller For Cpu Case Hdd X1C3 Pc 8 Channels Fan Hub 4 Knob Cooling Fan Speed Controller For Cpu Case Hdd X1C3 Package:Yes Type:PCI Cables Products Status:Stock Product Name:4-position knob fan speed controller Power supply interface:Molex/Sata Supply voltage:12V Support function:8 3pin/4pin chassis fans Installation location:chassis PCI bit Color:black+blue Material:PCB Package Contents: 1* governor 1* screw.1 governor. Installation location:chassis PCI bit. Support function:8 3pin/4pin chassis fans. Type:PCI Cables.