The VIZIO E701i-A3 E601i-A3 MAIN BOARD is a specific component designed for Vizio TVs. It is compatible only with models that have the same part numbers, ensuring a perfect fit and functionality. This main board is essential for controlling various aspects of the TV, such as displaying images and audio, processing inputs, and managing settings. With the trusted Vizio brand name, you can rely on the quality and compatibility of this main board for your television needs.