I have a number of older Lenovo (not thinkvision) monitors.  These all have a number of buttons on the front, one of which looks like this:

1[<>]2

sorta.  This button is WONDERFUL!!!!!!!!!!!!   By pressing this single button I switch inputs from DP to HDMI and back.  LOVE IT!!!!!!!!!!!

I purchased a E27q-20 that has this exact same labeled button, but now, to switch between inputs I have to press this button

... then the "sun" button to choose the ***ONLY OTHER OPTION AVAILABLE...THE OTHER INPUT!!!!** and

... then press the menu/enter button??

What moron programmed this?  Why have a button labeled like that to switch between inputs when you have to press 3 buttons to accomplish what a SINGLE BUTTON SHOULD DO?

Anyhow, I digress.  I am sure that Lenovo has a firmware upgrade that corrects this ridiculousness.  Where do I get it?

Hello jglazer63,

Welcome to Lenovo Community

I understand your frustration with the change in functionality of the input switch button on your E27q-20 monitor. 
I'm sorry for any inconvenience this has caused you.
For updates, kindly check the support site or this product overview page.
You may also view the user guide for detailed instructions. 
If you have any other questions or need further assistance, please don't hesitate to ask.

Best regards,
Lorenzo_Lenovo