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4K and HD KVM over IP Matrix Switching and Extension

Introducing Unified KVM

Emerald® is an award winning KVM matrix switching system that delivers pixel-perfect HD or 4K video over a dedicated or existing IP network. It allows reliable extension and switching of video (DisplayPort or DVI), transparent USB 2.0 and bi-directional analog audio signals across any combination and number of physical and virtual desktops and servers. Easily access both physical and virtual servers with support for VMware® and Microsoft® virtualization solutions, using PCoIP, RemoteFX and RDP 8.1. The Emerald Remote App turns any Windows 10 device into a software KVM receiver - without the need for additional hardware. Emerald delivers superior value, lowering your costs of ownership and saving your IT investments.

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Emerald Unified KVM Features

  • Remote Computer and Server Access

    Access and manage an unlimited number of servers, PCs, and virtual machines from any location and share resources such as hardware and licenses across a dedicated KVM network, an existing IP network, or even the internet.

  • 4K over IP KVM Matrix Switching

    High performance, secure extension and switching of 4K60 (DisplayPort 1.2) and HD (DVI) video, transparent USB 2.0 and bidirectional analog audio.

  • Remote BIOS-level Access

    Benefit from BIOS-level access to troubleshoot, reconfigure, reboot and power cycle servers remotely.

  • Remote Virtual Machine Access and VM Sharing

    Provide access to virtual machines, such as Vmware® and Microsoft® over RDP 8.1 or PCoIP (Ultra), to lower IT costs. Let multiple users access simultaneously the same virtual machine.


Emerald Unified KVM Benefits

Futureproof and Scalable KVM

Start with HD and add 4K at your own pace. Scale a small point-to-point extension up to an enterprise KVM matrix of unlimited endpoints by adding additional receivers/transmitters.

Network Resilience

Designed with 24/7/365 critical applications in mind, Emerald 4K and Emerald PE are configurable with redundant network paths via SFP(+) ports (fiber or copper) for fail-safe operation. Supports complete switchover to a backup control room location.

True USB Emulation

True USB emulation, supporting USB HID devices, X-Keys, USB push buttons, Wacom® tablets, USB mass storage and other high-speed USB 2.0 devices.

Remote Access to Virtual Machines

Enable multiple users to access any number of physical and virtual servers and desktops. Support for VMware® and Microsoft®, using RDP 8.1, RemoteFX and PCoIP.

Pixel-perfect 4K and HD Video

Extend and switch HD and 4K video. Adjust compression in five steps up to pixel-perfect image transmission — every pixel visualised at 60 fps with 10-bit colour depth.

KVM Software Receiver

Use the Emerald Remote App to turn any Windows 10 device into a software KVM receiver. Connect to mulitple transmitters and virtual machines simultaneously and from everywhere.

Emerald Remote App For Microsoft Windows® 10/11


The Emerald Remote App is a new KVM software receiver that enables remote computer access to both physical and virtual machines from any Windows 10 device. The Remote App increases mobility, device access and monitoring on your Emerald System and delivers a full HD video desktop experience up to 40 fps from multiple connections that can be launched simultaneously. This facilitates device management and access to your Emerald KVM network from anywhere you want.

  • Supports HD video up to 1920 x 1200 and provides access to both physical and virtual machines over an IP network or WAN connections
  • Open connections to multiple devices simultaneously
  • Licence-based access authenticated by the Boxilla® KVM Network Manager in real time, ensuring the Emerald administrator has full control (view licence options)

(1) Boxilla KVM Manager is required for demo purposes

Emerald GE PCoIP Ultra Gateway

Emerald® GE is a new unique solution, which leverages cutting-edge PCoIP® Ultra technology to enable users to access the cloud or a virtual machine just as they would a physical system. Because the gateway can be implemented across multiple receivers, users can access virtual machines in a shared model rather than a conventional single-user (point-to-point) model. With extremely low bandwidth requirements, the system supports secure, high-definition, and highly-responsive remote access over a LAN or WAN.

Industry Applications

Emerald Use Cases

Network Application

Network Application

Application diagram: Emerald IP-based KVM matrix switching application.

Multiple Site Application

Multiple Site Application

Application diagram: Emerald KVM matrix connecting a control room and a backup site.

Resilient KVM Networks

Resilient KVM Networks

Application diagram: Emerald KVM transmitters and receivers providing redundant network paths in case of failure.

Virtual Machine Connectivity

Virtual Machine Connectivity

Application diagram: Remote, high-speed access to virtual machines, supporting VMware and Microsoft.

Emerald Remote App

Network Application

Application diagram: Emerald Remote App installed on a laptop connected to Emerald Transmitters and a virtual machine via Boxilla.

Emerald Product Comparison

Feature Emerald 4K Emerald PE Emerald SE Emerald ZeroU TX Emerald Remote App
Max Video Resolution 4096 x 2160 at 60Hz (DisplayPort 1.2) 1920 x 1200 at 60Hz (DVI) 1920 x 1200 at 60Hz
Video Quality Pixel perfect Visually lossless High quality ~35fps
Dual Network Ports Yes, (2) SFP+ Yes, (1) SFP, (1) CATx No, (1) CATx -
Peripheral Support All USB 2.0 devices USB HID only
VM Support PCoIP, RDP/RemoteFX RDP/RemoteFX RDP/RemoteFX - RDP/RemoteFX
Bidirectional Analog Stereo Audio (Speaker only) -
System Scalability Point-to-point extension up to unlimited KVM matrix

Emerald Product Portfolio

Emerald 4K KVM Transmitters/Receivers

4K60 10 bit colour KVM over IP transmitters, DisplayPort 1.2, 4x USB 2.0, 1x RJ45, 2x SFP+, analogue audio in/out.

Emerald PE Pixel-Perfect
HD Transmitters/Receivers

Pixel-perfect HD KVM over IP transmitters and receivers, 1x (single-head) or 2x (dual-head) DVI, 4x USB 2.0, 1x RJ45, 1x SFP, analog audio in/out. PoE options available.

Emerald SE
HD Transmitters/Receivers

HD KVM over IP transmitters, 1x (single-head) or 2x (dual-head) DVI, 4x USB 2.0, 1x RJ45, analog audio in/out.

Boxilla® KVM Manager

Allows centralised management of Emerald KVM networks. Monitor network traffic, add or remove resources and users, and prevent unauthorised network access through intrusion detection.

Emerald Remote App Licenses

The Emerald Remote App turns any Windows 10 device into a software KVM receiver. Choose from multiple licences allowing 1, 5, 10 or 20 connections (Boxilla required).

Emerald USB Extenders

Adds high-speed USB 2.0 support up to 480 Mbps to your Emerald KVM system. Supports simultaneous USB sharing and automatically switches when target changes

Emerald ZeroU DVI Transmitter

Little bigger than your smartphone, these transmitters consume zero rack space and can be powered over USB. They support up to 1920x1200 resolutions (DVI), USB HID and audio.

Emerald IP Network Switches

Depending on the number of endpoints connected and the video resolution required, you can choose between a variety of different IP Network Switches supporting 1/10/100 Gbit from 12/24/28/32/48 ports.

Emerald PCoIP Gateway

  • Emerald GE

SFP Modules

Emerald supports both CATx copper and fibre connections from SFP/SFP+ slots. Choose your SFP module(s) based on the required transmission bandwidth.

Active Optical and
Direct Attach Cables

SFP+/QSFP AOCs and DACs are an all-in-one and cost-effective solution for connecting Emerald extenders and network switches.

Associated Products

While Emerald is a one-of-a-kind solution that opens up the revolutionary new world of Unified KVM, the platform builds upon time-tested KVM technology evolved by Black Box since the early 1990s. Emerald works flawlessly with many popular Black Box product families, including: the DKM proprietary direct-connect KVM system; the Freedom II KM Switch for easy switching just by moving a mouse between screens; the ControlBridge® system for one-touch, multisystem control; and the award-winning Boxilla KVM Manager.

Freedom II
KM Switch

This 4 or 8 port USB KM Switch allows switching between up to 8 connected PCs by just moving your mouse from one screen to another. Compatible with all Emerald products.

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Room Control

Versatile touch-based multisystem room control processor. ControlBridge allows control room operators to switch between sources or whole room setups.

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