I've used an ATEN CS1784A for many years, max resolution 2560x1440 via DVI Dual-Link cables with USB keyboard and mouse. Works fine with HDMI to DVI adapters at the host, though audio is 3.5mm jack only. I'm using it on 4 systems, Linux Mint, FreeBSD 13, Solaris 11 and windows 7. Perfect and rock solid, absolutely love it!