DCP-L8400CDN FAQs & Troubleshooting DCP-L8400CDN Not your product? Sort by: Updated Date Popularity 3 Results 1. 12/20/2018 What kind of memory can I use? 2. 12/20/2018 Install the optional lower tray 3. 12/20/2018 Install extra memory Consumables / Paper / Accessories FAQs & Troubleshooting