HL-5240 FAQs & Troubleshooting HL-5240 Not your product? Sort by: Updated Date Popularity 3 Results 1. 01/17/2014 How do I install the Optional Tray Unit? 2. 01/17/2014 How do I install additional memory? 3. 11/27/2008 What kind of memory can I use? Consumables / Paper / Accessories FAQs & Troubleshooting