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Printer parts
1 Input tray
2 Input tray guard
3 Cartridges
4 Lid
5 Lid-backing
6 Paper-width guide for the input tray
7 Control panel
8 Cartridge access door
9 Output tray
10 Output tray extender (also referred to as the tray extender)
11 Scanner glass
12 Rear USB port
13 Power connection.
4 Chapter 2 Get to know the HP Deskjet 2540 series ENWW