The Brother MFC-J3720 Remote Setup Port Windows driver is typically used to manage and set up a Brother MFC-J3720 printer (or multi-function printer) remotely over a network connection (such as Wi-Fi or Ethernet). The "Remote Setup Port" is part of the driver package that helps the printer communicate with your Windows computer or network, allowing you to manage settings, perform remote configuration, and utilize network features like printing and scanning remotely.