The IBM Connections plugins for Microsoft Office 2013 were updated in April 2016. Here's an walk-through tutorial of them in action uploading from Excel to an IBM Connections Community.
10. WHERE TO GET THE PLUG-INS?
• In IBM Connections.Cloud,
• Click on your Profile Icon.
• Go to Downloads and Setup
• Get the IBM Connections File Sync & Share
• You’ll need your IBM Greenhouse Account
• Download the ZIP and extract it.
• Save it somewhere where you can run the setup.
If you have an unlocked environment, put it in a community for your users to run
and then you can update the file whenever it changes (it’s roughly monthly)