80mm case fan for system cooling. Easy to install, anti-vibration Silicone Pins. RC56 Connector for operation in Silent Mode.                            Dimensions 80(W) x 80(L) x 25(H) mm Weight 75.5g Speed 1,700rpm ± 15% - 2,800rpm ± 10% Noise Level 20.0dBA ± 15 % - 32.0dBA ± 10 % Bearing Type Sleeve                - NP FAN(ZM-F1 Plus)  - Noiseless Connector (RC56)  - Anti-Vibration Silicone Pins for fan installation (ZM-SP1)  Zalman affixes a Computer Noise Prevention System (CNPS) mark to all components  used for noiseless computers.      The specifications of any product may change without prior notice  to improve the performance thereof.