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It highlights changes in system requirements, new features, and known problems. Please read this document carefully! NEW IN THIS RELEASE This release includes: . Support for LabelManager 420P and LabelManager PnP printers . Support for ACT! 2011 and QuickBooks 2011 . Developers Please Note: DYMO has a Software Developer’s Kit (SDK) for all supported printers. See the for more information. SYSTEM REQUIREMENTS Operating System Support Windows XP SP2 or later Windows Vista (32-bit or 64-bit) Window