Brother MFC-5440CN - Manual (Page 36)

INTRODUCTION 1 - 17
To load paper in paper tray#2 (MFC-5840CN only)
1
Pull the paper tray completely out of the MFC.
2
Press and slide the paper side guide and paper length guide to
fit the paper width and length.
You can use only plain paper sizes Letter, Legal, A4, Executive
or B5 in Tray#2.
Paper Side Guide
Paper Length Guide