The site lists the following as supported:
The following mobile device operating systems are supported by ActiveSync 4.1:
• Microsoft® Windows Mobile® 5.0
• Messaging and Security Feature Pack for Microsoft® Windows Mobile® 5.0
• Microsoft® Windows Mobile® 2003 Second Edition
• Microsoft® Windows Mobile® 2003
• Microsoft® Pocket PC 2002, Microsoft® Windows® CE OS version 3.0
• Microsoft® Smartphone 2002, Microsoft® Windows® CE OS version 3.0
I am running Microsoft Pocket PC, Version 4.20.1081 , 1996-2003 Microsoft Corporation
Which according to
http://msdn.microsoft.com/library/de.../devmobfaq.asp is the same as Windows Mobile 2003 - which is supported for ActiveSync 4.1
I am not interested in faster syncing or photo syncing with Outlook and ActiveSync 4.1.