Brand: Delta DELTA Produced by: Delta Electronics Public Co., Ltd. Model: AUC0812D Size: 80*80*25mm Voltage: 12V Current: 0.7A Speed: 1000~4500RPM Noise: 40DBA Air volume: 46CFM Interface: motherboard 4 pin Line length: Out of the box 110MM Additional features Support speed measurement Support PWM speed control function DELL / HP workstation or server! Note: The fan has PWM temperature control function. The normal temperature is very low at room temperature. When the temperature around the chassis or CPU rises, it will gradually accelerate, which will play a role in heat dissipation without excessive noise.