HP DeskJet 550C (C2121A)
MFG Part Number: C2121A
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Printer Support Linksshow
Cable USB parts for C2121A HP DeskJet 550C Printer
C2121A-Cable_USB
Cable USB - This interface cable is the standard 2.0 usb cable that connects to your printer and computer for printing.
DeskJet 550C Printer parts list