Surprisingly Ineffective
It only has one additional USB port outside of the K/M ports.
My keyboard, a Keychron V3 cannot be used because function keys are not recognized at all.
My mouse, a Mionix Avior 7000 works on my laptop with Arch Linux, but fails to work on a Mac with MacOS.
Outside of these issues my Arch Linux laptop will not boot if the KVM is on, I have to first turn it off, turn on the laptop and after reaching the login prompt I can turn on the KVM.
Video seems okay.
As it stands, the only thing the KVM does is switch the video, as I use a USB switch for the peripherals since the KVM cannot do it. From KVM to just V.