Epson EcoTank ET-4550 - Manual (Page 13)

C Edge guide Feeds the paper straight into the printer. Slide to the
edges of the paper.
D Paper cassette Loads paper.
A Document cover Blocks external light while scanning.
B Scanner glass Place the originals.
C Control panel Operates the printer.
A Scanner unit Scans placed originals. Open when removing jammed
paper inside the printer.
B Ink tank unit Contains the ink tanks.
User's Guide
Printer Basics
13