Get the best results from your HP printing system. HP Smart technology and chemically-grown toner formulas in HP 645A LaserJet Toner Cartridges work with your printer to deliver accurate, consistent color and reliable, cost-effective performance.Color(s) of print cartridgesYellowPrint

Get the best results from your HP printing system. HP Smart technology and chemically-grown toner formulas in HP 645A LaserJet Toner Cartridges work with your printer to deliver accurate, consistent color and reliable, cost-effective performance.Color(s) of print cartridgesYellowPrint technologyLaserPage yield (colour)~12,000 pagesPage yield footnoteApproximate yield based on 5% average coverage. Actual yields vary considerably based on content of printed pages and other factors.

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