Microsoft ActiveSync comes on a CD with your device and is software to control the connection between your desktop/laptop computer and the device. 

If you are having problems with ActiveSync, click HERE for an article by Microsoft on troubleshooting.

Click on the following icon to get the latest version of ActiveSync.

Note: ActiveSync 4.5 will work with Pocket PC 2002 and newer devices. For older devices use ActiveSync 3.8 or earlier.   (ActiveSync 3.8 and earlier is no longer available online from Microsoft, see CD that came with your device)

Note: Windows Vista and Windows 7 replaced ActiveSync with Windows Mobile Device Center.  (And only PocketPC 2003 or newer is supported on Vista and Windows 7)