Genuine C9731A toner cartridge produces high-resolution, vibrant prints making it perfect for presentations, colour graphics and photos. The Cyan  645A print cartridge features HP's latest ink technology, resulting in trouble-free, laser-precision printing that minimises the need for reprints and improves workflow. The HP C9731A Cyan toner cartridge has a good print capacity and a low price-per-print ratio making it ideal for both homes and businesses that have a busy print-load. If you want value-for-money, without sacrificing on quality then look no further than the HP 645A  toner cartridge. Colour: Cyan Duty Cycle:Approx. 12,000 pages @ 5% average coverage Compatible HP Printers: HP Colour LaserJet 5500 toner cartridges  HP Colour LaserJet 5500dn toner cartridges  HP Colour LaserJet 5500dtn toner cartridges  HP Colour LaserJet 5500hdn toner cartridges  HP Colour LaserJet 5500n toner cartridges  HP Colour LaserJet 5550 toner cartridges  HP Colour LaserJet 5550dn toner cartridges  HP Colour LaserJet 5550dtn toner cartridges  HP Colour LaserJet 5550hdn toner cartridges  HP Colour LaserJet 5550n toner cartridges