Review on eKL HDMI USB 2.0 KVM Switch 2 in 1 Out for 4K@60Hz 4:4:4 with Hotkeys, Remote Control - Share Keyboard/Mouse/Printer and Audio Between 2 Computers by Muleme Bollinger

It looked like the perfect KVM switch on paper. Unfortunately, the reality is very different. There is terrible hissing/hissing noise coming from the speakers regardless of what input they are on and if the audio is muted. Tried 3 different audio cables. There is no static electricity when connected directly to a laptop or tower, but it is always present over KVM. The front USB keyboard and mouse ports don't work with my Logitech wireless keyboard and mouse. Logitech works when connected to the rear USB ports, but then you can't use keyboard hotkeys or mouse switching. The IR remote control works right in front of the device when you are within 18 inches. Very disappointed. Was packaged in a box and the return process started within an hour of opening.