Use KVM extenders for a better working environment
Use KVM extenders for a better working environment
by Erik Indresovde
KVM stands for “keyboard, video, and mouse,”. A KVM extender is basically a device that extends these interfaces and enables remote access to a computer over distances from a few feet up to several miles, or even over the Internet.
A KVM extender unit consists of a transmitter device, sometimes called “local unit,” and a receiver device, also called “remote unit.” These devices can be connected over either CATx copper or fibre cable, and the newest technology can even extend signals over a standard IP network. You can connect your PC to a transmitter at work and plug in the receiver at your home office and work at your computer, just like you would with a direct connection.
What are the interfaces being used?
The video interface is usually either DVI or HDMI on most modern devices, while older computers might be equipped with VGA only.
In the past, keyboard and mouse were always separate interfaces and were using a PS2 6-pin mini-DIN connector. That technology has been almost completely phased out, and now USB is the standard connector. It usually doesn’t matter where you plug in your mouse or keyboard, as long as it is a USB port. Other optional interfaces that can be supported are audio and RS-232.
Why would anyone need a KVM extender?
Computer fans are loud, and computer CPUs have fans for cooling because they generate a lot of heat. Plus, they take up a lot of space. None of these features is ideal in an office environment. By using a KVM extender, CPUs can be backracked in a server room in a temperature-controlled environment. All the user needs is a tiny receiver unit on the desk where the keyboard, video display, and mouse would be connected.
An industrial environment has different challenges. The work environment might be dusty or dirty — areas where regular CPUs with fans will not last long. The fans will pull the dirt into the cabinet, clogging it up and causing the computer to overheat. By using a KVM extender, the PC can be relocated to a cleaner environment, and the keyboard, video, and mouse workstation can be connected to a remote KVM unit that is fanless. These are just two examples of how KVM extenders are being used, but the variety of applications for KVM extenders is extensive.
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