HP 645A Cyan Toner Cartridge C9731A supplies cyan toner for laser printing. It is listed for compatible HP Color LaserJet printers, including the 5500dn, 5500n, 5500 and 5550n, making it a replacement supply for these listed models.
The estimated colour yield is approximately 12,000 pages, calculated by HP at 5% average page coverage. Actual yield varies according to the content of printed pages, so this figure is a guide rather than a fixed page count.
In the box: toner cartridge and recycling guide.