@jakjakob0Sketchy, but it works! After months of waiting for the parts (realising that I missed the power supply I thought I had - so even more waiting), dismounting a stuff, only realising after that I could access the port just from above, my all in one to external monitor is (almost) finished! Just need to cover it up, figure out how to make the touch work (maybe it works with windows, idk - or with the driver I found somewhere?) and then I can start using it! (P. S.: if I needed it I could still add the integrated speakers and the CD drive)