This is how you use multiple PCs with just one mouse and keyboard

In the meantime, it is increasingly the case in the private sphere that a user uses more than one computer at his desk. A good example of this would be a gaming computer and a work computer, which have to be on the same desk for reasons of space. At the same time, there is no space for an additional screen and another set of peripherals (mouse, keyboard and speakers/headset). In such cases, a KVM switch (keyboard – video – mouse) can be used to switch between the two computers at the push of a button and to operate with just one set. Of course, this also saves you money.

KVM switches are available in different versions. The conventional variant provides that you connect your peripherals to the switch and connect the switch to the two computers, for example via USB or other proprietary connections. It is then possible to switch back and forth between the two systems by pressing a key on the switch itself or by pressing a specific combination of keys on the keyboard. A small LED light on the device usually shows you which computer you are currently using.

Best USB-C Hubs for Laptops and Tablets Reviewed (2022)

The KVM switch emulates the currently unconnected PC, so that the keyboard, mouse and monitor are still on it. Because if the connection were to be lost every time you switch, it could lead to problems with the operating system and the hardware, which often results in crashes – and that would be anything but productive. Both the topicality and the number of connections primarily determine the purchase price for a KVM switch.

Inexpensive models for two PCs with HDMI connection (3840×2160@30Hz) like the

Inter Tech KVM KVM-AS-21HA

you can already get for just under 50 euros. With a modern display port (3840×2160@60Hz), the KVM switches are of course a bit more expensive. For example, the recommended

Digitus 4K 60Hz DisplayPort

for around 100 euros.

You can connect up to four computers at the same time

DeLOCK 11484 KVM switch 4x

via HDMI ((3840×2160@30Hz) and Displayport (7680×4320@30Hz). Cost: Just under 170 euros.

Best Ethernet Hubs Reviewed (2022)

Alternatively, there are network-based KVM switches. The signal is transmitted via the network, which is why it is often called “KVM over IP”. The peripherals are then connected to a computer connected to the network, which acts as a remote client and is equipped with special software. This in turn transmits the signals to the computers in the network. This offers the advantage that the computers can also be controlled remotely. The manufacturer ATEN dominates this market with models of almost 450

(ATEN CN8000A)

up to almost 1900 euros

(ATEN KE6920).

The prices already suggest that such solutions are more likely to be used in the commercial or industrial sector.