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‎03-26-2018 04:10 PM

HP Recommended
Product: officejet pro 6978

I just purchased an officejet pro 6978 to replace my old HP309C .  I still have two full 564xl black print cartridges for my HP309c.  They appear to be the same size as the 902 black ink cartridge that came with the 6978.  Will those cartridges work in my new printer? 

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