General
Video format	HDMI
USB ports	2 HID (keyboard/mouse)
Connection type	CATx or LC fibre optic
CATx range	140 m
Range multimode fibre	1000 m
Singlemode fibre range	10 km
Bandwidth	2,5 Gbps
Resolution	up to 1080p
Warranty	2 years Double Diamond™
Link redundancy

The Modular DKM Extender Base Module from BlackBox, type ACX1MR-HDMI-2S, is a modular KVM extender module for extending video and peripheral signals in professional IT environments. It serves as a basic building block in modular DKM extender enclosures and enables individual configuration of KVM systems. The module provides an HDMI video connection as well as two USB HID connections for keyboard and mouse. It is designed for use in point-to-point KVM extensions or in matrix switching systems of the DKM FX and DKM FXC series.

Applications
This module is suitable for applications where remote control of a computer over long distances is required, for example in data centres, control rooms, or when using servers in remote rooms. It enables transmission of video signals and input devices over CATx cables or fibre optics, with range varying depending on the connection type. Use in modular enclosures with 2, 4, 6, or 21 slots allows flexible scaling of the system.

Functions and Features in Detail
The module features an HDMI video input supporting resolutions up to 1080p. The two USB HID connections are designed for controlling keyboard and mouse. Connection to the remote side is made via CATx cables or LC fibre optic connectors. The ACX1MR-HDMI-2S module version supports a redundant link, increasing connection reliability and making it suitable for applications requiring high availability. The redundant connection also allows use by two users sharing the same video channel.

Technology Explained Simply
Digital transmission of the video signal occurs without quality loss, ensuring pixel-accurate resolution up to 1080p. Transmission over CATx cables is suitable for distances up to 140 metres, while fibre optic cables enable multimode connections up to 1000 metres and singlemode connections up to 10 kilometres. The module’s bandwidth is 2.5 Gbps, sufficient for demanding graphics applications. Fibre optic use offers higher immunity to interference and is particularly suitable for critical applications in industrial or medical environments.

Compatibility and Accessories
The module is designed for use in modular DKM extender enclosures and must be equipped with at least one base module. It can be combined with various other modules to create different interface configurations. Connection is made via CATx or LC fibre optic, with the choice of connection type depending on requirements for range and bandwidth. The modules are compatible with KVM matrix switching systems DKM FX and DKM FXC.

Installation and Mounting
The module is installed into a modular DKM extender enclosure, with configuration consisting of transmitter cards at the computer and receiver cards at the console. Installation requires physical mounting of the module into the enclosure and wiring of the corresponding interfaces. Connection to the remote side is made via CATx cables or fibre optic cables, with cabling executed according to standards depending on the chosen medium.

Operational Advantages
The modular design allows flexible adaptation to specific requirements. Support for redundant links increases system availability. Digital transmission ensures high image quality without signal loss. Fibre optic use provides additional benefits for long-distance transmission and in environments with high electromagnetic interference. Integration into matrix switching systems enables central control of multiple computers from a single console.

Warranty
The module is supplied with a 2-year Double Diamond™ warranty, which represents the standard for BlackBox products.