Bearing Type: Sleeve RPM: 900±15%-1800±10% RPM Noise Level: 20±15%-34±10% dBA Color: Black Compatibility: Case Dimensions: 120 x 120 x 25mm Features: 1. Does not generate noise or vibration in Silent Mode. 2. It is a case fan product. 3. Provides pleasant environment by restraining vibrations with the use of vibration-preventing silicon pins. Package Contents: ZF1225ASH Noiseless Connector (RC56) Silicon pins for installing ZM-F3 (SP1)