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obj: concept
wiki: https://en.wikipedia.org/wiki/KVM_switch
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# KVM Switch
A KVM switch, short for Keyboard, Video, and Mouse switch, is a hardware device that allows users to control multiple computers or servers using a single set of input/output devices (keyboard, monitor, and mouse). This technology is particularly useful in environments where space is limited, or where multiple computers need to be managed efficiently without the need for multiple sets of peripherals.

## How Does a KVM Switch Work?
A KVM switch typically has multiple ports, each corresponding to a computer or server. Users connect their keyboard, monitor, and mouse to the KVM switch, which is then connected to the various computers or servers via cables. By pressing a button or using a keyboard shortcut, users can switch control between the connected devices, effectively toggling between different computers while using the same peripherals.

## Types of KVM Switches
1. Analog KVM Switches
Analog KVM switches are the traditional type and are commonly used in small to medium-sized setups. They transmit signals in analog form and are generally less expensive than their digital counterparts. However, analog switches may suffer from signal degradation over longer cable lengths.
2. Digital KVM Switches
Digital KVM switches provide higher-quality signal transmission compared to analog switches. They are capable of supporting higher resolutions and are less susceptible to signal degradation over longer distances. Digital KVM switches are often preferred for high-resolution displays and large-scale server management applications.
3. IP KVM Switches
IP KVM switches take the concept of KVM switching to the next level by allowing remote access to connected computers over a network or the internet. Users can control and manage computers from anywhere with an internet connection, making them ideal for remote server management and troubleshooting.
4. USB KVM Switches
USB KVM switches are designed specifically for devices that use USB connections for peripherals. They allow users to switch between computers while maintaining USB device compatibility, such as printers, scanners, and external storage devices.

## Advantages of Using a KVM Switch
- **Space Saving**: Eliminates the need for multiple sets of peripherals, saving valuable workspace.
- **Cost-Effective**: Reduces the cost of purchasing additional monitors, keyboards, and mice for each computer.
- **Convenience**: Streamlines the management of multiple computers or servers from a single console.
- **Increased Productivity**: Allows users to multitask more efficiently by switching between computers with ease.
- **Centralized Control**: Simplifies IT management by providing centralized control over connected devices.

## Common Applications
- **Data Centers**: Enables administrators to manage multiple servers from a single console.
- **Office Environments**: Ideal for users who need to switch between multiple computers or workstations.
- **Broadcasting Studios**: Used to control various audio/video production equipment from a central location.
- **Testing and Development Labs**: Facilitates testing and debugging across multiple computing platforms.