HL-4000CN FAQs & Troubleshooting HL-4000CN Not your product? Sort by: Updated Date Popularity 4 Results 1. 19/09/2014 How do I install the Optional Tray Module? 2. 27/01/2014 How do I install additional memory? 3. 09/05/2013 What kind of consumables or options does this printer use? 4. 17/10/2006 What kind of memory can I use? Consumables / Paper / Accessories FAQs & Troubleshooting