The circular fan blade design physically strengthens the overall fan blade structure, reducing vibration and ensuring smoother, more stable fan operation. Dual ball bearings minimize friction, reduce shaft noise, and offer , quiet operation, and long-lasting power. Eight large-area shock-absorbing rubber pads effectively absorb resonance noise, providing more stable vibration protection and a quiet working environment. PWM intelligent temperature control automatically adjusts the speed based on system load, balancing low noise and energy savings with high performance. Rated Voltage: DC 12V Speed: 3000RPM+10% Bearing Type: Ball Bearing Fan Airflow: 87.46CFM (MAX) Fan Air Pressure: 4.06mmH2O (MAX) Rated Current: 0.29A Noise: 36.1dB(A) (MAX) Insulation Type: Class A Power Supply: 4-pin PWM Color: Black Material: plastic Package Contents: 1 * Cooling fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.