What will happen if I plug my ipod mini into my new computer?

It’s a mini, not a nano. I have never plugged it into my new computer and it’s been almost 2 years since I updated it. If I plug it into my new computer, which has updated iTunes, will my mini erase? Will it be okay? Will it even register in iTunes because it and the software is so old?

I do not want to lose my music.