HP Officejet J3680 All-in-One Printer - Manual (Page 15)

10 Document catcher extender
11 Handset
Printing supplies area
1 Print cartridge door
2 Print cartridges
NOTE: The HP Officejet J3500 supports a black print cartridge only.
Back view
1 Power connection
2 Rear universal serial bus (USB) port
3 Fax ports (1-LINE and 2-EXT)
4 Rear door
5 Rear door access tab
(continued)
Understand the device parts 11