Genuine OEM HP Color LaserJet 5550hdn Toners

For the Color LaserJet 5550hdn, HP 645A toner and the Q3984A fuser kit aren't interchangeable supplies. The fuser uses heat to fix toner onto paper rather than adding toner. The C9734B transfer kit is also a separate maintenance assembly, with its own supply requirement.

Toner Buzz carries genuine HP 645A individual colors and a black, cyan, magenta, and yellow toner set for the 5550hdn. Order a single 645A for one color or the set for all four together. Q3984A fuser and C9734B transfer kits are sold separately from the toner bundle.