BlackBerry Support Centre

Here is download link of Blackberry PC Sync/ USB driver for Storm2 9550. The PC sync is called of the BlackBerry Desktop Software. The home screen of the BlackBerry Desktop Software provides you with quick access to common tasks and provides information about your connected smartphone or tablet, such as the model information and the last dates that your data was backed up and synchronized.

Here is  of the sync of your 9550 :

• Download Link : BlackBerry  Desktop Software v7.1
• File Name: 710_b033_multilanguage.exe
• Download Size: 113 MB

If you have used the BlackBerry Desktop Software with other smartphones or tablets, you can connect these Blackberry Storm2 9550 and switch between them using the Device menu.