Based on customer feedback we have changed the Office 2013 retail license agreement to allow customers to transfer the software from one computer to another. This means customers can transfer Office 2013 to a different computer if their device fails or they get a new one. Previously, customers could only transfer their Office 2013 software to a new device if their PC failed under warranty.
Revised rules:
http://blogs.office.com/b/office-ne...etail-license-agreement-now-transferable.aspx