M3 Mobile BLACK User Manual page 23

For features of WMDC or ActiveSync, please visit Microsoft homepage for more details.
If ActiveSync does not work please check followings.
Check USB cable is connected to cradle and PC properly.

Check PDA and its LCD are turned on

Check if [Allow USB connection with this desktop computer] is checked

from ActiveSync program menu
After checking all those above, try ActiveSync again or try Soft/Hard reset and
ActiveSync.
File Connecting Option
 
23