This is the hardware I recommend to controlling multiple computers with one keyboard and mouse

In my last column, I described how to control two or more PCs with a single set of input devices using software. While these applications can work over wired Ethernet, they more typically use Wi-Fi and can get tripped up in environments with public Wi-Fi like many offices.

Fortunately, a number of USB-based devices can provide a reliable alternative. Some can also work on devices such as Chromebooks, which prevent installing low-level drivers, and allow you to control a computer before it has gotten past the login screen and the software has loaded. However, a few still require a software installation.

First off, many vendors offer simple keyboard-mouse switches that can instantly switch control among multiple PCs using USB connections. KVM switches can also work; just don’t attach other monitors to the switch if they are connected to other PCs.

The trade-off is that these baseline devices can’t do...

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