HP CF281A, 81A Compatible Toner Cartridge . Compatible with CF281A, 81A - Black. Fits Models: LaserJet Enterprise Flow MFP M630z, Laserjet Enterprise MFP M630f, M630dn, M630h, LaserJet Enterprise M604dn, M604n, M605dn, M605n, M605x, M606dn, M606x