i just want to know if the system is compatible with ubuntu Linux , because i heard that some of the mini pcs are not compatible with ubuntu Linux.
That's a fair and reasonable question to ask in this forum. I am surprised that your have been told to ask the question is Ubuntu / Linux forums. I wpould think that SOMEONE would be able to give you an indication as to whether Linux is compatible with this hardware platform. At the time of the release of my NUC7i7BNH, Linux was not compatible with this device, although 18 months it could now be and even I don't know for certain.