40mm Fan: 2 Piece fan for equipment cooling, including Xbox consoles and devices in entertainment centers or enclosed spaces. For enhancing ventilation and controlling airflow in computer cases DC Brushless Fan 12V: 40x40x20 12v fan employed for cooling computer components, such as 3D prints, orange pi 5 plus case, PS4 Pros and laptops, and serving as exhaust fans for different setups 12V Fan: 40x20mm size ideal for 1U servers or replacing fans in network and storage equipment (routers, switches, NAS, NVR, etc.) or other devices such as DVRs High Performance: The fan cooling various components, including the CPU, 3D printer's hot end, and the case fan in a 1U rackmount chassis. It also ventilation for the Unifi USG Pro 4 security gateway, Ubiquiti switch, CR-10S, PSU Tiny Fan: 40mm x 40mm x 20mm / 1.58x1.58x0.79 in. per fan; Rated Voltage:12V 0.12A; Speed: 6000RPM; Air flow: 6.78CFM; Noise:25dBA; Connecter: 3Pin; Cable Length: 20cm Or 8 inche; Bearing type: Sleeve Bea