Similar to the shell console option of the node-specific menu, the KVM console menu also shows the VM within the browser using noVNC. Virtual Network Computing or VNC is a cross-platform system to share graphical user interface across network which also transmits keyboard and mouse signals. This allows an user to access an interface remotely. VNC requires java in order to function. To eliminate the shortfall of java, noVNC was born. noVNC relies on HTML5 operate so it works through any HTML5 supported browser. To open the VM console in a separate browser, we need to click on a viewer from the Console drop-down menu, as shown in the following screenshot:
When the VM video adapter is not set to SPICE, the option to select the SPICE console is disabled. SPICE (known as Simple Protocol for Independent Computing Environment) is a protocol that allows you to access a virtual machine or any physical machine remotely. SPICE can be used to access both Windows and Linux-based machines. Unlike noVNC, where a browser can be used to access a VM remotely, SPICE requires client software locally. Learn more about SPICE from here: http://www.spice-space.org/index.html.