/OU: The distinguished name of the organizational unit where the computer account object should be created. For example, ...

[/OU:]                    The distinguished name of the
                                    organizational unit where the computer
                                    account object should be created.
                                    For example, "OU=MyOU,CN=Test,
                                    DC=Domain,DC=com". The default location
                                    is the default computers container.
[/Domain:]                  The domain where the computer account
                                    object should be created. The default
                                    location is the local domain.


EXAMPLES:
---------
WDSUTIL /Add-Device /Device:Computer1 /ID:00-B0-56-88-2F-DC

WDSUTIL /Add-Device /Device:Computer1 /ID:{E8A3EFAC-201F-4E69-953F-
B2DAA1E8B1B6} /ReferralServer:WDSServer1 /BootProgram:boot\x86\pxeboot.com
/WdsClientUnattend:WdsClientUnattend\unattend.xml /User:Domain\MyUser
/JoinRights:Full /BootImagePath:boot\x86\images\boot.wim /OU:"OU=MyOU,
CN=Test,DC=Domain,DC=com"