AZ Supplies Re-Manufactured Replacement Drum Q3964A for 2550, 2820, 2840 for use in Color LaserJet 2550, 2820, 2840, 2550n, 2550LN Series Printers. 20,000 page yield Page Yield: 20,000. Replaces OEM Q3964A Drum. The compatible Drum will produce the same amount of page yield as an OEM Drum would. WARNING: Avoid poor quality knockoffs from other sellers; order directly from AZ Supplies ( MPSCAL ) Toner to receive the exact product listed and ensure superior quality. Premium Quality Replacement Toner Cartridge is made by ISO9001 Certified Factory to Meet or Exceed OEM Standards. All AZ Supplies brand products are backed by '100% Quality Satisfaction' 1 year warranty against defects in materials and workmanship for all toner products. Free tech support for any problems for all AZ Supplies brand products. The use of AZ Supplies brand replacement laser toner cartridges and supplies does not void printer warranty. These units are manufactured 100% brand new with all new parts including OPC drums, wiper blades, a smart chip and other internal parts, they are an economical alternative to expensive OEM laser toner cartridges.