The AdderLink XD Single HD/MST Dual HD Extender Pair with UK Mains Cables from Adder 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 HD KVM extension, resulting in superior functionality and flexibility in a cost-effective, reliable, and straightforward solution.

- Single or dual-head HD60 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
AdderLink XD extender modules provide support for:
- High quality single- or dual-digital video
- Video resolutions up to 1920×1200 @ 60Hz
- USB keyboard and mouse (up to USB 2.0)
- An RS232 serial device at speeds up to 115200 baud
- Mono microphone
- Stereo speakers, digital stereo audio out
- Line-level audio in/out connections
ADDERLink XD612 Features
High-resolution video, real-time control
The system supports resolutions up to 1920×1200 @ 60Hz using 8 bits per color and 4:4:4 chroma sampling. Up to four heads are transmitted within a single cable by utilizing DisplayPort 1.2 MST (Multi-Stream Transport) technology.
Single cable
HD video, USB2.0 HID (human interface device) and audio are transmitted on a single CATx or fiber cable.
Up to 4km/2.5 mile extension distances
The ADDERLink XD612 supports both copper and fiber interfaces. It provides a range of up to 100m over a CAT6 cable link, and up to 4km over an optical fiber link.
Emulated USB2.0
Enables connection of any full and low speed USB HID from mouse and keyboards through to graphics tablets and jog shuttles.
EDID management
The system has intelligent EDID management to allow the true characteristics of the monitor to be passed back to the computer.
Plug and Play
The ADDERLink XD612 extender is delivered in a zero config. state so it works, without the need for drivers or software, as soon as it is connected.
Digital audio
Video: Encapsulates two channels of 24-bit, 192kHz sampled “Pulse-code modulation” (PCM) audio with each video signal. USB: Two channels of 24-bit, 96kHz sampled PCM audio. Analog: Two channels of 24-bit, 96kHz audio for Line in/out, microphone and headphone/speakers.
HD quality analog audio
HD audio quality (stereo audio, 24-bit sampled at 96kHz) is available for line in/out, microphone and headphone or speakers.
Serial communications
RS232 can be passed between the units to a maximum baud rate 115K2 with RTS/CTS flow control.





