FAX-4750e FAQs & Troubleshooting FAX-4750e Not your product? Sort by: Updated Date Popularity 2 Results 1. 08/24/2006 How do I install additional memory? 2. 03/16/2006 I installed the LT-400 optional tray. I use letter size paper in Paper Tray #1 and legal size paper in Paper Tray #2 (LT-400). How do I program the Brother machine to select the correct paper tray when copying a legal size document? Product Setup FAQs & Troubleshooting