The abbreviation KVM is short for “Keyboard, Video, Mouse”. The KVM switch connects a keyboard, a video display and a mouse to multiple computers thus allowing the user to control multiple computers with only one set of output and input devices. This is convenient for users who have obtained new computers but still want to be able to use their old computers without spending money on another keyboard, monitor or mouse. It also saves on space since cabling requirements and desktop clutter is reduced. The switch is also commonly used by businesses to save on costs in cases where one person uses multiple computers. In modern KVM switches, there are other additional switching functionalities including USB ports and audio thus allowing the user to share speakers and USB devices with multiple computers. There are also KVM switches that function in reverse by allowing the user to access one computer from multiple keyboards, monitors and mice.
This type is applicable in cases where the user wants to control one computer from different locations. Most common KVM switches allow the user to control two computers; however there are switches that allow users to control as many computers as they wish. The KVM switch is connected to the keyboard, mouse and monitor and a button or dial is used to switch from one computer to another. There are also more sophisticated switches that switch between computers using hot keys, which are keyboard shortcuts. Recent developments in KVM switches have led to the development of a networked KVM. This switch does not require the keyboard and mouse to be connected in any other way except using a standard Ethernet network connection.
This means that one user can control thousands of computers from a single access point. Additionally, a wireless router in the user’s home can allow a wireless connection by entrenching a web server into the router. This allows users to access their computer using any of the network’s connections without physically accessing the computer. This is also why a KVM switch is commonly used in networks that have dedicated servers. Since a server does not require user interaction, the keyboard and monitor take up unnecessary space, power and money. Larger networks that have their servers horizontally mounted on racks can use one set of output and input devices using the KVM switch. The KVM switch therefore saves a lot of space and is economical and convenient. Its flexibility allows it to meet all needs whether in the home, small enterprise or office.