Office 2010 OPK is available at oem.microsoft.com*
Instructions on how to implement the OPK is availabe on Winotek's support site.

* Requires registration as a Microsoft Partner. https://partner.microsoft.com/US/program/40032508

For End Users:
If your System was not preloaded with Office 2010; you can download the media from office.microsoft.com/productkeycard