Review on TESmart 4K@60Hz Ultra HD HDMI KVM Switch, 2x1, 3840x2160@60Hz 4:4:4, with 2 Pcs 5ft KVM Cables, Supports USB 2.0 Devices, Control up to 2 Computers/Servers/DVR (Black) by Carlos Barete

Works well with 3440x1440@60Hz sources. The EDID emulation is flawless. Switching to video takes a few seconds, but that may be due to the monitor and not the switcher. Windows doesn't see the switch and leaves the windows where they were. The USB keyboard and mouse are also emulated. This means there is no connect/disconnect event. Keyboard/mouse switching is instantaneous. Unfortunately, this emulation means that non-standard keyboard keys like the volume/mute keys will not work on Microsoft keyboards. The workaround is to use the USB port on the KVM instead of the keyboard/mouse ports. The USB port is not emulated, it is simply switched between inputs, which means a connect/disconnect event. The device is a USB hub, so keep this in mind when connecting a chain of hubs. The included cables are about 4 feet long. If necessary, standard HDMI and USB-A to USB-B cables can be easily swapped out. Keyboard shortcuts work well. Switching via mouse gesture was too shaky for my taste, but functional. It would have been nice to have a wired switch input, but the IR remote was a nice touch. In general it is recommended.