HL-5450DN FAQs & Troubleshooting HL-5450DN Not your product? Sort by: Updated Date Popularity 3 Results 1. 24/09/2015 What kind of memory can I use? 2. 24/09/2015 Install additional memory. 3. 22/03/2013 Install the optional tray unit. More FAQs Consumables / Paper / Accessories FAQs & Troubleshooting