For "auto-switching" functionality (where the software detects a print command and switches ports automatically), you must install the utility provided by the manufacturer: IOGEAR 2 Port USB 2.0 Switch - Auto Printer Switch
Elias, the resident IT "volunteer" (mostly because he knew how to restart a router), was tired of physically swapping the USB cable between his laptop and Sarah’s desktop every time a memo needed printing. He’d finally bought a , promising seamless transitions without the cable gymnastics.