As it turns out, it’s relatively easy to use a tablet or a spare laptop as touchpad for a Windows PC. Fire Max 11 running Bluetooth Keyboard & Mouse ...

Universal Control means you can use the same mouse and keyboard with multiple Macs and iPads. You can also use an external KVM, or virtual KVM software.

The Steam Deck can work with a keyboard and mouse; all you need are the right settings. Here's how to connect them and what you should know about the layout.