Microsoft rolled out Office 2010 KMS Host License Pack for Microsoft Office 2010 volume editions client products because users require the product key for its activation. According to Microsoft:

“Key Management Service (KMS) is a local volume activation method. To activate your Office 2010 client installations with KMS, you will need to set up a KMS host.”

Microsoft Office 2010 KMS Host works for Office 2010 client installations with KMS for Windows Server 2003, Windows Server 2003 SP 1, Windows Server 2003 SP 2, Windows Server 2008 R2, Windows Server 2008 SP 2, Windows 7 (volume editions).

Download Microsoft Office 2010 KMS Host License Pack