Aero Cool Touch Control Cool Touch-R Fan speed and Temperature controller with USB3.0 port and Card Reader. Monitor and control up to 4 Fan with 3 speed setting Low, Medium, High. Individual fan can turn off completely. Easy touch screen control to adjust fan speed and view each setting. . Display temperature in Celsius or Fahrenheit with easy one touch button. 7 different colors setting for LCD display and can be turn off completely while fan is still running. Connectors: 4 x 3-pin connectors. Material: ABS Plastic. Support fan up to 20 watts per channel. Include USB 3.0 port, 1 card reader support SD, MMC, and T-Flash card. Include 4 screws. Customer Service: Supportataerocool.us or call 510-661-9948. RMA Service: RMAataerocool.us or call 510-661-9948.