You need know the IP address of that network printer, please check with your IT guy or check the IP addresss if you have it setup already in Windows (shown in Ports tab of Printer properties). In Mac Big Sur, add Printer by providing the IP address. select IPP as protocol. I have a FX DocuCentre-V C2265 PCL 6, so I selected Generic PCL Printer to use. Once printer is added, double click the printer to open up the queue, and print a test paper to verify. If you select Generic PostScript Printer, it could prints dozens of waste.