Nidec (W40S12BMA5-57T07) FAN-0100L4 is a standard fan for CSE-111, CSE-119TS, CSE-505, CSE-510, and CSE-819TS series chassis. This fan has been fully tested and validated by Supermicro to ensure the best quality and cooling performance. Manufacturer Nidec Fan Size 40mm Rated Fan Speed 8500 RPM Acoustic Noise Level 34 dBA Maximum Airflow Rate 12 CFM Rate Current (A) 0.12A Connector 4 Pin Dimensions 40L x 40H x 28W (mm) Search Terms 40mm fan, 40mm, A8-04028ANI-002C001, B8-04028ANI-002C001, W40S12BMA5-57T07 Warranty 1 year warranty Product Environmental Compliance RoHS and REACH compliant, details available upon request