HL-5240 FAQs & Troubleshooting HL-5240 Not your product? Sort by: Updated Date Popularity 3 Results 1. 01/17/2014 How do I install additional memory? 2. 11/27/2008 What kind of memory can I use? 3. 09/23/2005 How do I install the Optional Tray Unit? Consumables / Paper / Accessories FAQs & Troubleshooting