Confirm that wires are attached properly to the port.
Then, disconnect and reconnect your devices. To fix this, disconnect and reconnect the USB cables on both ends. If your Brother Printer isn’t connecting to your computer, it means you have not established a connection correctly.
But whether it is a wired or wireless setup, you can easily fix the problem. There are many reasons why this can be happening. Why is my Brother printer not connecting to my computer? – This is common among printer owners.