Review on CKL Quad Monitor HDMI KVM Switch 4 Port 4K@30Hz with Cables - Extended and Mirrored Display Support for Windows, Linux, and Mac by Marty Orthodontics

I would give 4.5 stars but it's impossible. It is very compact for a 4 x 4 KVM and also very reliable. When I switch from one computer to another, anything that was plugged into USB (e.g. a webcam) or audio jacks transfers automatically, so there's no need to plug them in again. The wired remote control is very convenient. touch only the design is misleading, with 1 on top, 2 on bottom and 3 and 4 on the sides instead of going in a circle or linear. I rarely have to reboot the kvm switch and that might happen after a power outage or when changing cables to monitors or computers. The only issue I had is that they don't support 4k monitors set to above 30Hz (at the OS level). This was already stated in the specs so I can't deduct a full star for that.