Manufacturer: Taiwan Qi Hong Polytron Technologies IncModel: DA12025B12LP005Bearing: double ball bearingSize: 120*120*25MMVoltage: 12VCurrent: 0.3ASpeed: 700/2600RPM + 5% (PWM)Noise: 19~38.5dBAAir volume: 35~80.78CFMInterface: motherboard 4PIN support PWM temperature control