Hi,
What region are you located at?
The 904 cartridges are available in Latim America, the 902 cartridges are intended for the United States and Canada.
If you may moved with the printer to another country you will need a full set of the local ink cartridges, then you will need to contact HP Sopport to reset the printer for the target region, else it will not accept the cartridges.
If this is the case indeed follow the steps below:
https://support.hp.com/us-en/document/c02558798
Shlomi


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