The Black Box website uses cookies.
By continuing the use of the Black Box website, or by pressing the agree button on the right, you consent to the use of cookies on this website. More information.
Home > Solutions > By Technology > KVM over IP Switches > Emerald® 4K KVM over IP Matrix Switching & Extension


4K and HD KVM over IP Matrix Switching and Extension

Multiple Computer Access over IP

Need More Information?

Give us some info, and we'll get in touch.

Contact Us Now

The award winning Emerald® 4K KVM over IP is a Unified KVM system that delivers pixel-perfect HD or 4K video over an IP network. It allows reliable extension and switching of video (DisplayPort or DVI), transparent USB 2.0 and bi-directional analogue audio signals across any combination and number of physical and virtual desktops and servers. Easily access both physical and virtual servers— with virtual machine support for VMware®, Microsoft® and Citrix®, 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.

With more capabilities than other KVM solutions currently on the market, Emerald delivers superior value, lowering your costs of ownership and saving your IT investments.

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 KVM and AV routing of 4K60 DisplayPort 1.2 and HD DVI video as well as transparent USB 2.0 signals

  • 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


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 is configurable with redundant network paths via SFP+ ports (fibre 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 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.

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 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®, Microsoft® and Citrix®.

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 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.

View Products

Emerald SE, HD Transmitters/Receivers

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


Emerald 4K P2P Extension Kit

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


Emerald ZeroU Transmitters

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 KVM Matrix 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.

View Products

Emerald 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.

View Products

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® Centralised KVM & AV Manager allows local or global centralised management of KVM networks. Monitor network traffic, add or remove resourcs and users, and prevent unauthorised network access through intrusion detection.

Buy Here

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.

Buy Here

Room Control

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

Buy Here


Emerald Brochure

Download Brochure

Emerald Flyer

Download Flyer

Emerald ZeroU Flyer

Download Flyer

Emerald Remote App Leaflet

Download Leaflet

Bridging the Gap Between Physical and Virtual Servers

Download White Paper

Webinar: Future Trends of KVM Switching & Extension

View Webinar

Case Study

Share |