HTC P3300 User Manual page 55

If you want to synchronize your device with both your computer and
Exchange Server, do the following:
a.
For the Contacts, Calendar, E-mail, and Tasks items, choose
whether to synchronize them with the computer or with the
Exchange Server. These items cannot be synchronized to both.
b.
Select the check boxes of the other information types if you want
to synchronize them with your computer.
Information types on the PC and Exchange Server
9. Click Next.
10. Click Finish.
When you finish the wizard, ActiveSync synchronizes your device
automatically. Once synchronization completes, you can disconnect your
device from your PC.
Synchronizing Information and Setting Up E-mail Security 55