Instruct: Classify a review as either positive or negative.
Query: Not for HP DeskJet 940c!

The "Will this work for your printer" box assured me it would work on my HP 940c printer, but it does not. I'm very disappointed. I don't know what the problem is: I know it's full of ink, and it looks and fits exactly like the original cartridge... For future reviewers: please include the series and the model of your printer to help other shoppers. Hope they have a better experience!