How does a KVM switch work?
Tastatur, Video, Maus - Schalter
A KVM switch enables several computers to be controlled via one operating station.
The abbreviation stands for "Keyboard, Video, Mouse". It is therefore a distributor for connected peripheral devices, i.e. keyboard, mouse and monitor. A switch can be used to switch between the connected systems. In some cases, additional devices, such as USB hubs or speakers and microphones, can also be connected and used either alternately or simultaneously.
The peripheral devices used are connected directly to the KVM switch. The computers to be operated were originally mainly connected via VGA+2xPS/2 connections. Nowadays, this is mostly done using combinations of USB and DVI or HDMI. In some cases, proprietary cables, such as DB25 cables, are used, as these can create a faster and mechanically more stable connection.
There are various options for switching between the systems. For example, many KVM switches have an integrated switch using a physical button or touch control panel. This allows you to switch from one computer to another at the touch of a button. Another option is hotkeys, which are entered via the connected keyboard. The command to switch is executed by pressing the scroll key twice and another key that is assigned to the corresponding computer.
Applications of a KVM switch
With a KVM switch, several computers can be operated in a local architecture. Above all, this creates security for the integrated systems. In addition, software-independent control is realised.
Modern KVM switches emulate a permanent connection of keyboard, mouse and monitor for all connected systems. This makes the computers think that there is an uninterrupted connection. The device information can be saved separately on each system in this way. This prevents inconsistencies with the respective operating systems or drivers.
KVM switches can be used at smaller workstations or in larger networks. The technology enables remote administration, for example. KVM has a major advantage over software-based solutions for controlling different systems. Virtual Computing Network (VNC) or terminal servers function as processes in the running operating system of a computer. If there are problems or compatibility issues with the corresponding software, remote control is not possible. With a KVM switch, on the other hand, the systems can be used independently of the software used. They can also be booted remotely or changes can be made to the BIOS settings.
InLine offers an extensive range of
KVM switches and accessories
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InLine® Cable KVM Switch, 2-port, Displayport 1.2, 4K, USB, Audio
Control two computers with one console - 4K switching at 60 Hz Fast switching: QuickSwitch button or hotkeys for direct switching between two computers. 4K image quality at 60 Hz: DisplayPort 1.2 delivers sharp display on one monitor. Less cabling ef...
Item no.:
63613I
InLine® KVM Desktop Switch, Dual Monitor, DP+HDMI, 4K, USB 3.0, Audio
The InLine KVM Desktop Switch was specially developed for the use of two monitors (1x HDMI, 1x DisplayPort) on two multimedia computers. With the InLine KVM Desktop Switch you can completely control two PCs with only one USB keyboard, mouse and two m...
InLine® KVM Cable Set USB for 19" KVM Switch length 1.8m
Fast, tidy KVM cabling for rack installations One cable for USB and video: Connects KVM switch to PC/server via USB Type A and VGA in a single cable. Tidy installation: All-in-one design reduces cable clutter in the rack and under the desk. Quick ass...
Item no.:
60667D
InLine® Compact Desktop KVM Switch USB DVI 2 Port + Audio with Cables 1.2m
Operate two computers centrally via DVI, USB and audio Seamless switching via hotkey or button: Control two computers without software installation. Full keyboard/mouse functions preserved: True Transparent USB emulation keeps driver functions and sp...
Item no.:
61602C
KVM splitters and extenders
A KVM splitter has the opposite function to the switch. You can use it to access a system via several operating stations. This function can be useful if, for example, two or more workstations are to use one computer.
The KVM extender, on the other hand, is responsible for increasing the distance between the KVM switch and the connected computers. This enables loss-free transmission by means of amplification. The principle of a KVM extender is based on a transmitter and a receiver. A computer is connected to the transmitter and the control elements are connected to the receiver. The connection between the two devices is then established via a network cable, often a Cat.5 cable. Connections via fibre optics are also possible in some cases. This allows machines, bank terminals or monitoring systems to be operated, for example. Workstations where the computer should not be located directly at the desk are also a conceivable location.
Several extenders located at different points can be connected to a KVM switch. The InLine® range includes high-quality KVM switches and extenders as well as other devices for the reliable distribution of signals.
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InLine® DVI USB KVM Extender over TP Cable with Audio up to 50m
Flexibly extend DVI workstations up to 50 m Use the console at a remote location: DVI monitor, USB mouse/keyboard and audio up to 50 m over two Cat.5e/6/6A cables. Clear image over distance: supports up to 1920x1200/1080p at 40 m and 1080i at 50 m. S...
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61640
InLine® HDMI USB KVM over IP Extender, 4K up to 100m
4K KVM distribution over Ethernet up to 100 m with 1-frame latency 4K signal over Ethernet up to 100 m: Transmit an HDMI source via direct CATx cable or via Gigabit switch to a remote display. Real-time control via USB 2.0: Control keyboard and mouse...
Item no.:
64601
