Genuine HP W1470X (147X) High-Yield Black Toner Cartridge for use in the LaserJet: Enterprise M610 n, Enterprise M610dn, Enterprise M611dn, Enterprise M611n, Enterprise M612dn, Enterprise MFP M634z, Enterprise MFP M635fht, Enterprise MFP M635h, Enterprise MFP M636fh, Enterprise flow MFP M634h, Enterprise flow MFP M635z, Enterprise flow MFP M636z.