(NOTES)
http://technet.microsoft.com/en-us/library/ee624350(v=office.15).aspx
/inpkey:value Installs a product key (replaces existing key) with a user-provided product key.
/dstatus Displays license information for installed product keys.
/dstatusall Displays license information for all installed licenses.
(TO DISPLAY LICENSE INFORMATION)
cd "C:\Program Files (x86)\Microsoft Office\Office15\"
cscript ospp.vbs /dstatus
(TO CHANGE KEY)
Run the following command to enter the product key.
cd "C:\Program Files (x86)\Microsoft Office\Office15\"
cscript ospp.vbs /inpkey:xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
(ACTIVATE OFFICE)
To activate the remote computer, type the following command, and then press ENTER:
cd "C:\Program Files (x86)\Microsoft Office\Office15\"
cscript ospp.vbs