Features: 1. One-Piece Cooling Fan For Orange Pi5plus, Low Noise, High Airflow, High Cooling Efficiency. 2. Aluminum Heat Sink, High Cooling Efficiency. 3. Pc Material Fan, Safe And Environmentally Friendly, Good Heat Resistance 4. Oil-Containing Bearings, Smooth Running, Low Noise. 5. Convenient And Simple Installation Description: Bearing Type: Oil-Containing Rated Voltage: DC 5V Working Voltage: DC 4.5V-5.5V Starting Voltage: ≤DC3V (On/Off) Air Volume: 5.22CFM(REF) Wind Pressure: 2.70mmH20(REF) Speed: 4900 RPM±15% Noise: 21.44 dB(A) Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use size: about 45 x 49 x 18mm Material: PC+aluminum colour: As shown Package Contents: 1 x Motherboard Heat Sinks 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