Power supply: AC 100V-240VInput:110V-240V 50/60HzOutput:DC 3-12V 200-2000mAPlug and PlayEasily connect the rate controller into the fan’s terminalsuse velocity controller simply plug it appropriate into a wall outlet to start the fan Controller Parameters:Input:100V-240V 50/60HzOutput:DC 3V-12VCurrent:200-2000mAInclude switch or not:YesWeight:158g/pcs Speed Control Adapter:Input:100V-240V 50/60HzOutput:DC 3V-12VCurrent:200-2000mAInclude change or not:YesWeight:158g/pcs12cmSingle fan parameters:Dimension: 120x120x25mm/PCS,Bearing Type: Dual Ball/Hydraulic bearingPower Connector: DC ConnectorRated voltage: DC 12VRated speed: 3000rpm ±10% RPMCable Length: 300mm approx weight: 345G / piece 120mm fanPower plug adapter/Converter:10A 2/250VFans Parameters: Item name: Server Cooling Fans Dimension: 120x120x25mm Bearing type:Hydraulic/Duall BallFan Speed: 30000RPM Rated Voltage: DC 12V Power Connector:DC 5 Cable length:35CM Life: 40000/50000 hrs Package Include:(Pls make sure the volts and bearing type as your demand,we solely send the particular voltage out since the identical as your choice)1pcs Server Fan or 1PCS AdapterNote:Pls verify back the Plug Types earlier than make payments, we totally ship the Plug variety since the identical as your choice.