Features: The 80mm PC fan features intelligent temperature control, automatically adjusting fan speed between 800- 3500RPM on the device heat levels. This USB cooling fan with 112cm cable, ensuring efficient heat dissipation for routers, TV Box, and consoles. For enthusiasts and gamers a reliability cooling solution to prevent overheating and maintain of electronic devices. Usage Method: If it exceeds 30 degrees Celsius, start working. It stops working at 25degrees Celsius, P0 setting 30,P1 setting 25,P2, pp3 set 0,PO: Start temperature setting -50~110degrees Celsius,P1: Stop temperature -50~110degrees Celsius,P2: Temperature correction -10~10 degrees Celsius,PP3-: Delay start for 0-10 minutes,P0 sets the startup temperature. Press the setting button once to enter the internal interfaces, which defaults to P0. Press the setting button again and use the up and down button to set the desired startup temperature. P1 set the stop temperature. Press the set button once to enter the internal interfaces, and the digital display will be P0. Use the up and down button to switching to P1, press the set button again, and use the up and down button to set the desired stop temperature. Specifications: Material:Plastic+Metal Size:Approx.80x80x50mm/3.15x3.15x1.97in Input:USB 5V2A Power:3W Cable Length:Approx.112cm/44.09in The temperature control wire length:Approx.93cm/36.6in, Speed:3500RPM, Air volume:44CFM, Oil bearing Package Includes: 1xUSB Cooling Fan note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.