HP DeskJet 550C (C2121A)
MFG Part Number: C2121A
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Cover Cartridge parts for C2121A HP DeskJet 550C Printer
C2121A-Cover_Cartridge
Cover Cartridge - This is the cover/ door that is opened to remove the cartridge(s) - usually, when this door opens the carriage moves.
DeskJet 550C Printer parts list