Connectors allow your web browser to save citations to your Zotero library.
The Zotero downloads page should automatically detect what browser you're using and give you a link.
![Screenshot of installation screen for Zotero Connector, link to connector download](http://lgimages.s3.amazonaws.com/data/imagemanager/7567/zotero_connector.png)
Each browser has its own version of the Zotero connector, so if you use Chrome, Firefox, Edge, and Safari you'll need to install all.