You can load up to 25 sheets of custom-size paper at a time.
Load paper into the paper tray with the printable side facing down.
Make sure:
The paper size fits within these dimensions:
Width:
76.0–216.0 mm
3.0–8.5 inches
Length:
127.0–432.0 mm
5.0–17.0 inches
The paper guides rest against the left, right, and bottom edges of the paper.