My setup is a little different but it's reliable and simple: Dell UltraSharp U3417W has built in usb hub. I can connect pc and laptop to this monitor and switch

My setup is a little different but it's reliable and simple: Dell UltraSharp U3417W has built in usb hub. I can connect pc and laptop to this monitor and switch between them with monitor button. Connect keyboard and mouse to monitor (and connect upstream usb cable to pc/laptop) so your keyboard and mouse move with your monitor switch. This setup only use one monitor but it's enough for my use. I have another regular 1080p monitor that always connect to one machine.