What I miss about KVM switch is the ability to switch to another system using a keyboard hotkey, such as double-pressing the "Scroll Lock" key on the keyboard.

What I miss about KVM switch is the ability to switch to another system using a keyboard hotkey, such as double-pressing the "Scroll Lock" key on the keyboard. Most high-end KVM had this feature, so that I could use a hotkey to quickly switch to different system. Once anyone gets used to this, there's no going back to rotary dials or slow physical push buttons, etc. I had 3 or 4 systems connected to KVM and nothing was faster. I've tried using modern HDMI/monitor switchbox/splitter and USB switches, but they require awkward physical reaching for the buttons, as I have to reach out for a button or two, every time I need to switch to another system. The old KVM did this in split second and I didn't even have to think about it, sort of like Vim once you get used to the keys. I was able to work so much faster, switching from one system to another, whenever I needed to. Now, I have to think about it before switching, not that I'm lazy, but I don't want to exert so much energy just to switch to another system. Edit: I also miss PS/2 and VGA, for their ability to switch quickly as well. USB devices and HDMI monitors take awhile to switch.