The following matrix shows which TS CAL’s and RDS CAL’s can be entered on different versions of the TS and RD Licensing Server:

	Terminal / RDS Licensing Server OS Version
CAL Type	Windows Server 2000	Windows Server 2003	Windows Server 2008	Windows Server 2008 R2	Windows Server 2012 or 2012 R2
Windows Server 2000 TS CAL	Yes	Yes	Yes	Yes	No
Windows Server 2003 TS CAL	No	Yes	Yes	Yes	Yes
Windows Server 2008 TS CAL	No	No	Yes	Yes	Yes
Windows Server 2008 R2 RDS CAL	No	No	Yes	Yes	Yes
Windows Server 2012 RDS CAL	No	No	No	No	Yes