The Brother MFC-9840CDW LAN Windows Driver is a software package that allows your Brother MFC-9840CDW printer to communicate with a Windows-based computer over a Local Area Network (LAN) connection. The MFC-9840CDW is a color laser multifunction printer that supports printing, scanning, copying, and faxing. The LAN driver enables the printer to connect to your network, allowing multiple users to print from and access the device.
In simpler terms, this driver ensures that your Brother printer can be properly detected by your Windows computer when the printer is connected via Ethernet or Wi-Fi to your local network.