@dragu thank you so much!!!

@dragu thank you very much, my question is actually: can both work? ie when I want to use the display I use the display, and when I want to use the hdmi port I use it, ie I can use both things (hdmi and display)?

ok thanks, I will wait for an answer from someone who has already tried it

Thanks for the reply, and I apologize for if my question has not been clear, I try to explain myself better:

We in our project we have to mount a display (https://potentiallabs.com/cart/image/cache/catalog/Raspberry Pi 2/3.2inch-RPi-LCD-B-4-1-autoxauto-800x800.jpg) but we want to have the possibility to use, when needed, also the hdmi port, so my question is: if the display is connected, will the hdmi port work the same? if yes, while the hdmi port will work, will the display be off? thanks

Hi me and a friend, we are realizing a small project that has, as the title, the Raspberry 3 b+ and the recalbox, but our doubt is this: if we raspberry mount the display, this is completely compatible with the recalbox system? when the hdmi port will be connected will it be possible to use the hdmi without using the display?

thanks a lot to everyone