HP 504A (CE251A) Cyan Original Toner Cartridge for HP Color LaserJet CP3525 CM3530 HP 504A (CE251A) toner cartridges work with: HP Color LaserJet CP3525, CM3530. Original HP toner cartridges produce an average of 71% more usable pages than non-HP cartridges. Cartridge yield (approx.): 7,000 pages 504A toner is designed to work with your HP printer for high quality, reliable results every print. What's in the box: New Original HP 504A (CE251A) toner cartridge Color: Cyan