Don't know if I'm in the correct section. I have a Mac Pro (2013) that my son told me to replace with a Mac Air. I was proud of myself that I was able to migrate old to new but nothing is working. My Word docs came thru Read Only, mail program didn't work, and I did connect Sandisk but it's still connected to Pro. And do i need this anyway? I'm no longer involved in any organizations so think if I can just scan the documents I want and then use Pages,then I can actually do without Word. Same with Excel--really don't need it anymore. I'm also very inefficient using the track as have always been a Mouse girl (except when being a Cougar). If I get a mouse there's no place to plug in as the Sandisk is in one outlet and main cord in other. Would appreciate any assistance you experts can give me! Thanks for considering my problems. Mary Lee