HL-4040CN FAQs & Troubleshooting HL-4040CN Not your product? Sort by: Updated Date Popularity 3 Results 1. 24/11/2022 What are supported file formats for the direct print feature? 2. 03/08/2022 How do I use the "Print to file" feature? 3. 15/04/2009 How do I print data directly from the USB flash memory drive? Print FAQs & Troubleshooting