Features: 1. Provides strong heat dissipation, can efficiently cool the machine temperature. 2. With double ball bearing, the fan run stably and silently. 3. Easy to install and use. 4. Adopting DC12V power to give a high performance while saving power. 5. Advanced design eliminates noise to give a quiet heat dissipation. 6. High quality material enables this cooling fan to work for a very long time. 7. Suitable for extreme cooling or server use. Specification: Model: SHLF1212AHE-02: For AFC1212DE Lead wire: 4 wires (supports pwm) Voltage: DC 12V Current: 1.60A Speed: 4000RPM Air volume: 154.5CFM Noise: 45.4dB-A Bearing: high precision double ball bearing Power range: plus or minus 15% of rated power Insulation resistance: greater than 500 MΩ Withstand voltage: sink current 0.5mA 500V / 1 minute Working life: 80000 hours when the ambient temperature is 25 °C Scope: For DELL Precision 390 workstation CPU cooling and other equipment Scope of application: -10 °C to +70 °C Size: about 12*12*3.8cm/4.72*4.72*1.5in Package List: 1 * Fan