A method of controlling backlight module, a backlight controller and a display device using the same are provided herein. Data tunneling is used to route the data through the external data network between the test host and the PON Optical Line Terminal. An air cart having multiple compartments is selected according to the number of base nutrients andor seed to be delivered. After receiving the second signal, the server transmits a third signal including at least a portion of the image from the hosted server to a user device.