Dynatron Top Motor 80x80x15mm 12 Volt Ultra High Speed PWM Fan-DF128015BU

Dynatron Top Motor 80x80x15mm 12 Volt Ultra High Speed PWM Fan-DF128015BU   840556003540 FEATURES: Frame: PBT+30%GF UL94V-0 (Black)Impeller: PBT+15%GF UL94V-0 (Black)Weight: 9±2 GramsOperating Temperature: – 10 °C ~ + 65 °C (65 %RH)Storage Temperature: – 30 °C ~ + 70 °C (65 %RH)Static Pressure (mm/H2O): 5.90Life Hours: 50,000 PRODUCT SPECIFICATION: DC Fan Size: 80x80x15mmBearing Type: Double Ball BearingFan Speed: 4000 RPMNoise Level: 40.2 DBARated Voltage: 12 VoltRated Current: 0.45 AMPMax Airflow:  48.6 CFMConnector: 4 Pin PWM 9" Tail NOTE:  PWM Fans are not variable speed control fans on their own.  An integrated circuit varies the speed and airflow of a fan using a pulse-width-modulated (PWM) voltage in response to temperature or system commands send typically by a computer motherboard. You can use them to run at full speed from an external supply if you adapt the plug. (PWM Adapter Cables)