The only problem is that the USB port on it rarely needs to be restarted. I use this switch when all 4 ports are occupied. Every few days after the switch, I find that my mouse and keyboard connected to the USB port on this KVM no longer work. If I switch to a different port and back, it usually fixes it. But every few times it stopped working and I had to restart KVM to get them back. Otherwise it's great. 4K no problem, USB 3.0 speed no problem.
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