WEBOnline User's Guide. MFC‑J4320DW / MFC‑J4420DW / MFC‑J4620DW / MFC‑J5520DW / MFC‑J5620DW / MFC‑J5720DW. Home. Before You Use Your Brother Machine. Introduction to Your Brother Machine. Paper Handling. Load Letter, A4, or Executive Size Paper in Paper Tray #1. Load Ledger, Legal, or A3 Size Paper in Paper Tray #1.