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I have a USB hub where I can switch between two computers. On pressing a button, the hub disconnects all devices from one computer and then, after a short time, reconnects them to the other computer. Video switching is not necessary!

I am searching a device that simulates a keyboard and mouse to both computers, i.e. both computers see a plugged-in keyboard and mouse all the time. Events from the real keyboard/mouse are then relayed to the currently selected computer.

I know that keyboards have state and more sophisticated gaming mice might also have that. But I am not convinced this problem cannot be solved somehow, hence my question:

Does such a thing exist? If yes, which models are of interest?

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I think you may be referring to dynamic device mapping technology. If so, that's very much a thing.

I could recommend ConnectPro's VGA+USB KVMs. To the best of my knowledge they don't have USB-only KVMs, so UR-12 seems to be the the least feature-full model - it has 2 USB ports + 1 VGA port.

I know for a fact that proper keyboard + mouse switching is a non-trivial task and many KVMs fail at it (such as Jide Tech JD-72UA, which I own).

Disclaimer: I don't own a ConnectPro KVM at the time of writing (but I intend to buy one soon).

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    From what I understand DDM is the best option, but it would suffice to have peripheral emulation for mouse and keyboard already. This should make the switch cheaper, right?
    – hochl
    Commented Aug 30, 2021 at 12:17
  • Have you tried one of the ConnectPro KVMs without any video connected, just for keyboard and mouse switching? Does it work for that? If so what model do you have?
    – Croad Langshan
    Commented Oct 23, 2022 at 12:58
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    @CroadLangshan I have not strictly speaking, but I don't use the video switching capabilities as of now (I have some wires connected, but it shouldn't matter). Yes, the devices switch between 2 Linux and 1 Windows boxes without an issue. I think at some point the devices were reconnecting, but cannot tell for sure at this point. I have UDP2-14AP.
    – Allgreed
    Commented Oct 24, 2022 at 17:44

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