What's VX4S-N LED Display Controller? VX4S-N is a professional LED display controller of NovaStar. Besides having all the functions of an LED display controller, it also features powerful front end video processing. With high image quality and flexible image control, VX4S-N is able to meet the demands of media industry. Product Description It can controller indoor and outdoor large led display screen Packaging & Shipping Carton Package;Support DHL,UPS,Fedex.For large quantity, support sea shipping,air shipping,etc.