1AUTO /MANUAL manual mode automatic mode switch. 2Big LCD screen to display the temperature, fan speed, alarm temperature, hard disk state, to constantly know the the working condition. 3Smart adjust the computer temperature though controlling the wind speed of 5 fans. 4Can manually set up the alarm temperature range from 40 to 90 degree. 5When the fan breaks down and can not cool the computer, it will alert immediately. Features:1. AUTO /MANUAL manual mode automatic mode switch.2. Big LCD screen to display the temperature, fan speed, alarm temperature, hard disk state, to constantly know the the working condition.3. Smart adjust the computer temperature though controlling the wind speed of 5 groups of fans.4. Can manually set up the alarm temperature range from 40 to 90 degree.5. When the fan breaks down and can not cool the computer, it will alert immediately.Specifications:Color: BlackSize: Approx. 150 x 77 x 43mm / 5.61 x 3.03 x 1.69inchDisplay: LCDInstallation Site: Drive positionControllable Fan: 5 fansMaterials: High resistance industrial plasticOutput Voltage: 5V-12VInput Voltage: 5V and 12VPackage Includes:1 x Computer Fan Controller4 x Screw1 x Sticker(For fixing temperature probe)Note:Please note that the power of a single fan should be less than 10W, and the total power should not exceed 50W.