The ADDERLink XD642 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.

  • Dual-head 4K60 video, USB2.0 and audio
  • Point-to-point protocol for ultra-low latency
  • Flexibility between copper and fiber connectivity
  • Adder’s USB emulation ensures reliable computer bootup

High-resolution video, real-time control
The system supports resolutions up to 4096×2160 @ 60Hz using 8 bits per color and 4:4:4 chroma sampling.

Single cable
Video, audio, USB HID (human interface device), hi-speed transparent USB and RS232 signals are transmitted over a single CATx or fiber cable.

Up to 4km/2.5 mile extension distances   
The ADDERLink XD642 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 joysticks.

Transparent USB2.0
Mass storage devices and isochronous devices, such as webcams and audio headsets can be used through the transparent USB2.0 hi-speed port.

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 XD642 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 up to eight channels of 24-bit, 192kHz sampled “Pulse-code modulation” PCM uncompressed audio integrated with video signal.  
USB: Up to two channels of 24-bit, 96kHz sampled PCM audio.

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.

Video resolutions
The system supports resolutions up to 4096×2160 @ 60Hz

Software compatibility
All known operating systems. No drivers required.

Extension technology
5Gb/s CATx or 10Gb/s fiber with ultra low latency adaptive video stream compression.

Local unit – Transmitter (TX)

  • 4 x Tri-color status LEDs
  • 2 x DisplayPort™ in
  • 1 x USB2.0 Type B for HID
  • 1 x USB2.0 Type B for hi speed
  • Line in and out analog audio
  • RJ12 serial port
  • RJ45 and SFP+ ports

Remote unit – Receiver (RX)

  • 4 x Tri-color status LEDs
  • 2 x DisplayPort™ out
  • 3 x USB2.0 full speed Type A
  • 1 x USB2.0 transparent hi-speed Type A
  • Mic in, headset and speaker out
  • RJ12 serial port
  • RJ45 and SFP ports

Physical Design
Robust metal construction

  • TX and RX: 186mm/7.32” (w), 39mm/1.54” (h), 148mm/5.83” (d)
  • TX: 1.29kg/2.84lbs•RX: 1.24kg/2.73lbs

Power supply

  • 100-240 VAC, 47/63Hz
  • 12 VDC 18W output from power supply unit

Operating temperature
0ºC to 40ºC/32ºF to 104ºF

Storage temperature
 -10ºC to 50ºC/14ºF to 122ºF

0% to 80% (non-condensing)


Extension Distance

  • Cable type: Fiber (SM) / Distance 4 km / 13,123 ft
  • Cable type: Fiber (MM) / Distance 300 m / 984 ft
  • Cable type: CAT6 / Distance 100 m /328 ft
  • Cable type: CAT5e / Distance 50 m /164


  • SM (Single-Mode Fiber)
  • MM (Multi-Mode Fiber)
  • CAT6 is recommended for CATx extensions. CATx extensions are limited to 2 patch connections. Patch cables should be CAT6 or better.

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