Compatible with: HP Enterprise Flow MFP M630z, M604dn, M604n, M605dn, M605n, M605x, M606dn, M606x, MFP M630dn, MFP M630f, MFP M630h, M605 dh Laser Compatible Replacements Included: 4 Pack HP CF281X / HP 81X Toner Cartridge Delivers 25,000 pages just like the original 81X HP toner cartridge Average cartridge page yield in accordance with ISO IEC 24711 This is the higher yield version of HP 81A / HP CF281A toner cartridge / HP Toner Black Color: Black