4 Pack HP Color LaserJet 2550, 2820, 2830, 2840 Compatible Laser Toner Cartridges Replacements:
1 HP Q3960A Black Laser Toner Cartridge
1 HP Q3961A Cyan Laser Toner Cartridge
1 HP Q3962A Yellow Laser Toner Cartridge
1 HP Q3963A Magenta Laser Toner CartridgeCompatible Printers:
HP - Color LaserJet Series
Color LaserJet 2550, Color LaserJet 2550L, Color LaserJet 2550Ln, Color LaserJet 2550n, Color LaserJet 2820, Color LaserJet 2840