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: Black Size: 150 * 77 * 43mm / 5.61 * 3.03 * 1.69inch Display: LCD Installation Site: Drive position Controllable Fan: 5 fans Materials: High resistance industrial plastic Output Voltage: 5V-12V Input Voltage: 5V and 12V Package Includes: 1 x Computer Fan Controller 4 x Screw 1 x Sticker(For fixing temperature probe)