@György-Farkas Thank you so much. You really save alot of my time. I found UART2 on this pins and some other GPIOs. If you don't mind, I will share updated file, then @J-Tech can update it in his version. I din't check rest of pins. I found what I need and now I can use uart2 and for example second ethernet port :). https://drive.google.com/open?id=1QDuor03V4BJN5V6oLVEPM2RSqHu97-pq