FAX-4100/FAX-4100e FAQs & Troubleshooting FAX-4100/ FAX-4100e Not your product? Sort by: Updated Date Popularity 2 Results 1. 03/27/2023 Change the printer driver settings (Windows/macOS) 2. 09/22/2011 Where is the Manual 2-sided(Duplex) setting option in the Mac OS X 10.3 driver ? Driver / Software FAQs & Troubleshooting