HP 78A (CE278A) Black Toner Cartridge, 2 Toner Cartridges (CE278D) HP 78A (CE278D) toner cartridges work with: HP LaserJet Pro M1536, P1606. Original HP toner cartridges produce an average of 71% more usable pages than non-HP cartridges. HP 78A toner cartridge yield (approx.) per cartridge: 2,100 pages. Operating temperature range 10 to 32.5 degree Celsius 78A toner is designed to work with your HP printer for high quality, reliable results every print. What's in the box: New Original HP 78A (CE278D) toner cartridges Color: Black