Lenovo ThinkVision P40w-20 39.7" 5K Ultrawide Curved Monitor - Manual (Page 19)

Chapter 1 Get started with your monitor 1-15
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After operating option 2 or option 3, the OSD pops up. The USB devices will be switched to another
upstream port after OSD disappears, else manually press the “Menu key” to switch immediately.
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While operating option 2 or option 3, and if the USB device is working on data transferring, the port
icon will be red, not blue. There will be a pop-up message for the risk alert of data losing possibility.
After OSD disappears, USB device will not be switched to another upstream port. If you still want to
switch USB devices, operate option 2 or option 3 again before OSD disappears.
* Remarks: eKVM functionality may vary depending upon the different brands of the mouse.