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- HP Community
- Printers
- Printer Ink Cartridges & Print Quality
- the serial number of my printer is not recognised by HP

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04-20-2024 02:32 AM
I have an issue with my black ink not printing on my HP Deskjet 2721e since fitting new catridges(Instant ink) so I tried to set up my printer on the help site but the serial number is not recognised.
Any ideas?
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