The Brother MFC-J450DW is a multifunction inkjet printer that offers printing, scanning, copying, and faxing capabilities. It supports both wired and wireless connectivity, which allows it to be used remotely via a network connection. When setting up the printer remotely or configuring it over a network (such as Wi-Fi), the remote setup port driver typically refers to the network port that allows the printer to be connected and accessed remotely from a computer running Windows.

The remote setup port driver enables the printer to communicate over a network (wired or wireless) with your Windows PC, enabling remote printing, scanning, and other functions without the need for a direct USB connection. This driver is essential for establishing a network connection to the printer from your PC, especially when configuring it for wireless or network use.