The receiving card is the control system of LED screen. Usually, sending card is installed on the PCI-E slot of the control PC, collects and transfers data to LED screen. Receiving Card is installed in each cabinet of LED screen, Receives the data from the sending card and runs the LED screen . On the LED screen the receiving card plays an essential role in the proper functioning of this, there's no way to bypass its major role . So the receiving card is in charge of receiving the video data and assigning it to each LED chip that makes up the screen, forming the image into its best complete version. Its effectiveness depends on its ability to send this data in real time .