ITEM NAME:Computer Chassis Baffle PCI Bit Fan Speed Regulator 3 Circuit Hub External M8B3 Computer Chassis Baffle PCI Bit Fan Speed Regulator 3 Circuit Hub External M8B3 Voltage regulation range: 0-12V Connectible fans: 3 Fans Product Name: Fan Governor Upper limit power: 30W (theoretical value) Adjustment mode: manual knob adjustment Installation location: PCI location of chassis Power Supply Interface: Big 4D Fan Interface: 4PIN (3 PIN) colour:black Material:metal Package Contents: 1*Hub.Installation location: PCI location of chassis. Fan Interface: 4PIN (3 PIN). Upper limit power: 30W (theoretical value).