HP 508A (CF360A) Black Original Toner Cartridge for HP Color LaserJet Enterprise M577 M553 HP 508A (CF360A) toner cartridges work with: HP Color LaserJet Enterprise M577, M553. Original HP toner cartridges produce an average of 71% more usable pages than non-HP cartridges. Cartridge yield (approx.): 6,000 pages 508A toner is designed to work with your HP printer for high quality, reliable results every print. What's in the box: New Original HP 508A (CF360A) toner cartridge Color: Black