macOS firmware M2B907 was released on February 8, 2022. Install the newer macOS firmware M2B108 released on October 10, 2022. Then retest.Read through this for instructions = FAQ Monitor firmware
Hey Guys, let's start with the Specs: Software should be up to date. The DDPM is displayed at the top of the dock, but with an exclamation mark. When I click on it, the following message appears:   [IMAGE] When I right click on the DDPM in the dock, it looks like this. [IMAGE] Who can help? It doesn't seem to be working.   Thanks in advance,   Tapir.  
U4919DW, macOS DDPM 1.0.2.0019 not working