Model : KDE1209PTVXBorders diameter and thickness : 92MMX25MMLead : 4-wire (motherboard 4PIN plugs • With PWM temperature control function )Voltage : DC 12VCurrent : 0.37ANominal power : 4.4WSpeed : 2300 RPMAir flow : 45 CFMPressure : 7.11 mmH2ONoise level at full speed : 25-33 d-BATemperature state Noise level : 18-22 d-BAFans line length : 20CM