After a 2 month wait, today my PI 4's arrived. I loaded a 16GB sd card with the latest raspbian and connected it all up. My monitor never displays a thing. I see the red led on the pi with a few quick blinks from the green led and the voltages test out fine. Both PI's act the same. I have also pulled working sd cards from prior pi versions with no change. Any suggestions? What brand / style of adapters are you guys using to convert to the micro HDMI connectors? Is there a adapter you could suggest to convert DVI-D to Micro HDMI?