I have Office 365 which I pay $10 for monthly. I am permitted to have this on up to 5 devices at once. Question is, if I sell my SP, can I leave a copy on the sold unit? What would be the potential issues with that? I know I won't use 5 instances on my personal and family devices so I don't mind leaving it on there to help sell the device. I'm especially interested in making sure the person is not able to sync with my OneNote, etc. Thanks.