The LornCeng 4K DVI Over Fiber KVM Extender is a high-quality product designed to extend the distance between a computer and peripherals by up to 20km. It includes DVI and USB 2.0 connectors for seamless connectivity. Specifically designed for the LornCeng RS232 model, this extender is ideal for users looking to overcome EMI interference and maintain a reliable connection for their KVM switch setup. Perfect for professionals in need of a long-distance solution for their computer setup.