YKUP is a USB upstream switch that allows two hosts to share the same USB device. The user switches the device between the two hosts simply by pressing the on-board push-button.
For example, if you want to use the same keyboard with two PCs, without the need to physically switch the USB cable connection between them, YKUP is for you. With YKUP you can switch the keyboard from one PC to the other just by pressing a push-button. Alternatively a digital control signal (e.g., from a GPIO) can be used to trigger the switch.
Reference Code: 300114