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KVM switch and thin client: One workstation, several computers

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tagsglossar, hardware

2 min read

KVM switch and thin client: One workstation, several computers

In short: A KVM switch lets you operate two or more computers with one keyboard, mouse and monitor; a thin client is a lean computer that uses programs from a server.

In more detail: Whoever operates two computers (private and company laptop, PC and server) does not need two keyboards and screens. Two ways: switching by hardware (KVM) or working on the central server (thin client).

In Depth

KVM switch

KVM stands for Keyboard, Video, Mouse. A box with several inputs for computers and outputs for monitor, keyboard and mouse. A keypress or hotkey switches. Models exist for HDMI, DisplayPort or USB-C, with a USB hub (so printers and webcams switch too) and partly with EDID emulation so that windows keep their position when switching. It is important that the switch supports the monitor’s resolution and refresh rate (for example 4K at 60 Hz).

Alternatives

  • Monitor with several inputs and its own USB hub: many modern monitors switch picture and USB together.
  • Software KVM such as Synergy, Barrier or Input Leap shares keyboard and mouse over the network; the screens stay separate.
  • Remote access (RDP, VNC, AnyDesk) operates another computer over the network.

Thin client

A small, power-saving computer without much processing power that connects to a server (remote desktop, virtual desktops à la Citrix or VMware Horizon, cloud PC). The programs run on the server; on the thin client only screen content, keyboard and mouse appear. Advantages: central administration and security, low hardware costs, quiet and economical. Disadvantages: dependence on network and server, less suitable for compute-heavy work such as video editing.

Selection and tips

Check connection type, number of computers, resolution, latency and whether hotkeys or buttons on the device are wanted. Cheap switches sometimes have picture problems or lose keyboard functions. Security: in company environments special KVM switches with isolation between networks make sure nothing passes from one computer to the other.

See also: Docking stations, DisplayPort, USB-C