After intentive research I chose because of the positive comments for the Level One KVM-0221 and - due to the lower price - plus on eBay for 10 euros Shipping bought used..
The installation is very easy and even without the Quick Guide in two minutes finished. The cables are bundled and well self-explanatory. The only flaw is that the cable lead in all four directions out, so that claim the right rigid cable a lot of space. However, this is the very compact design due to, because the switch fits comfortably in a normal-sized man's hand.
For Windows (from XP onwards) and MacOS (from 10.4) a small software is included that allows you to switch via hotkey (CTRL + ALT + 1) can make. If one uses a different OS (eg Linux), you can still switch on the two buttons on the device.
Switching works very well, after the switch is necessary to the system, however, partly. Give a few seconds until Mouse and keyboard react again. No compromises have to do about it in the graphics, a deterioration of image quality, I could not tell.
The device provides ports for the monitor, speakers, microphone and mouse and keyboard (two USB ports). Other devices such as printers or LAN do not fit in here and must be otherwise connected.
But overall a really good device does what it is - and the flawless. An absolute buy recommendation.
