The HP Color LaserJet 2550 Ln uses compatible toner in four colors: HP 122A (Q3960A) black at about 5,000 pages, plus cyan (Q3961A), magenta (Q3963A) and yellow (Q3962A) at about 4,000 pages each. A compatible drum, Q3964A, is rated at about 20,000 pages. The same supplies also fit the Color LaserJet 2550L, 2550n and 2820. Orders get same-day shipping on most orders.
