The ADDERLink™ XD641 is a high performance KVMA (Keyboard, Video, Mouse and Audio) extender that is designed to provide reliable and real-time access to critical computers – regardless of the location, whilst maintaining the same user desktop experience. Developed for enterprise organizations and high-pressure control rooms, it combines the simplicity of true plug and play and high performance 4K KVM extension; resulting in superior functionality and flexibility in a cost-effective, reliable and straightforward solution. Single head 4K60 video, USB2.0 (HID) and audio are transmitted on a single CATx or fiber cable.  Point-to-point protocol for ultra-low latency. Flexibility between copper and fiber connectivity.  Adder’s USB emulation ensures reliable computer bootup.