HL-4570CDW FAQs & Troubleshooting HL-4570CDW Not your product? Sort by: Updated Date Popularity 3 Results 1. 22/03/2013 Install the optional lower tray 2. 15/11/2010 What kind of memory can I use? 3. 21/07/2010 Install extra memory More FAQs Consumables / Paper / Accessories FAQs & Troubleshooting