Emerald® - 4K and HD KVM over IP Matrix Switching and Extension

Introducing Unified KVM

Emerald Unified KVM over IP is a converged KVM system that delivers pixel-perfect HD or 4K video, transparent USB 2.0 and audio over a dedicated or existing IP network.

  • Supports any combination and number of physical and virtual desktops and servers
  • Connect to virtual machines, including VMware, through PCoIP or RemoteFX
  • Virtual machine sharing allows the same virtual machine to be shared between multiple users with keyboard and mouse control
  • Remote app software receiver to simultaneously access multiple connections from your desktop
  • ZeroU Transmitter helps you save valuable rack space

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

  • Out-of-Band Remote Server Access

    Secure high-speed access to an unlimited number of endpoints like servers, PCs, and virtual machines

  • Remote BIOS-level Access

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

  • Remote Virtual Machine Access

    Provide access to virtual machines, such as Vmware® and Microsoft® over RDP 8.1 or PCoIP, to lower IT costs

  • Advanced KVM Network Management

    Set up user access control, monitor bandwidth, receive automated security alerts and more


Emerald Unified KVM Benefits


Futureproof & 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. Use Black Box Emerald IP switches or a managed third-party IP switch.

Network Resilience

Designed with 24/7/365 critical applications in mind, Emerald 4K is 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®, Microsoft® and Citrix®, using RDP 8.1, RemoteFX and PCoIP.


4K Pixel-perfect Video

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



KVM Software Receiver

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

New: Emerald Remote App For Microsoft Windows® 10

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

(2) App only works in conjunction with valid licence

Industry Applications

Emerald KVM Matrix Switch Use Cases

Network Application


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

Multiple Site Application


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

Resilient KVM Networks


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

Virtual Machine Connectivity


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

Emerald Remote App


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

Emerald Product Portfolio


Emerald 4K KVM Transmitters/Receivers

4K60 10 bit colour KVM over IP or direct-connect transmitters, DisplayPort 1.2, 4xUSB 2.0, 1xRJ45, 2x SFP+, 1x serial, analogue audio in/out.


Emerald SE, HD Transmitters/Receiver

HD KVM over IP or direct connect transmitters, 1x (single head) or 2x (dual-head) DVI, 4xUSB 2.0, 1xRJ45, 1x serial, analog audio in/out.


Emerald 4K P2P Extension Kit

4K60 KVM extension kit (receiver and transmitter), including 2x SFP+ modules, 850nm Multimode fiber up to 300m.


Emerald ZeroU Transmitters

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 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 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 12/28/32/48 ports.


Emerald SFP Modules

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

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.


KVM Manager

Boxilla Centralized KVM & AV Manager allows local or global centralized management of KVM networks. Monitor network traffic, add or remove resources and users, and prevent unauthorized network access through intrusion detection.


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.


Room Control Automation

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

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