HL-3040CN FAQs & Troubleshooting HL-3040CN Not your product? Sort by: Updated Date Popularity 3 Results 1. 04/25/2013 Print both sides of paper manually (Manual Duplex Printing for Macintosh) 2. 01/19/2012 Print on plain paper or bond paper from the Manual feed slot 3. 01/19/2012 Print on envelopes, labels or thick paper from the Manual feed slot Print FAQs & Troubleshooting