HP 645a Yellow laser toner cartridge, reference number C9732A from Hewlett Packard has been designed for use with HP Colour LaserJet 5500, 5500dn, 5500dtn, 5500hdn, 5500n and 5550 printers It provides outstanding print quality and is guaranteed to provide consistently reliable performance It is convenient to handle and install and can be easily maintained The C9732A cartridge is available in Yellow colour It provides a page yield of approximately 12,000 pages at 5% coverage This toner cartridge is also referred to as the HPC9732A and HP654