50mm Fan 5V USB Brushless DC Cooling Fan, 4 Pack Speed 4200 RPM 5010

Colour: 5010 5V USB. Part number: 50mm Fan 5V USB. Manufacturer reference: 50mm Fan 5V USB. Maximum rotational speed: 4200 RPM. Airflow: 3CFM, Speed: 4200±5%PRM, Noise: 22 DBA. Bearing Type: Oil Bearing; Lead Wire: USB; Length: 1m / 39.37 in.