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It does not have or show "Use Default". I do not have Intel PROset installed, so it doesn´t show it to me. The problem is that I used to have good connectivity within my network which included to other work stations and a NAS, we are connected through a switcher, lately I included a Mac computer, I was having difficulties transferring info between the Mac and a computer so a mess with its properties hoping I would get a better rate between the two but when I changed the properties it also harm the connectivity with the other two work stations but the NAS. So, I want to get the properties back to normal. Can you help me?