Power Pack S7-REDCONNECT/2008 for expansion S7-1613/2008 to S7-REDCONNECT; Single License for 1 Installation license key on USB stick, Class A 2 languages (de, en); for 32 bit: Windows XP Professional, Windows Vista Ultimate/Business, Windows 2003/2008 Server; for max. 4 CP 1613, CP 1613 A2, CP 1623