Navigate to the TRON DApp site of your choice, for example: TRONscan.
In the DApp site, click Connect Wallet. (On some TRON DApps, the DApp will immediately detect the Fordefi browser extension and will try to connect to it.)
From the options that appear, select TronLink, then click Connect.
Fordefi should connect the vault to the DApp.
In the list that appears in the Chrome extension, choose the vault that the DApp will interact with. When connecting to TRON DApps, only TRON vaults will be available.
Click Connect.
When Fordefi has successfully connected the vault to the DApp, the vault address is displayed in the DApp site.
For example: