Premium 42127401 Yellow Toner Cartridge fully compatible with the Okidata C3100, C3100n, C3200, C3200n, C5100, C5100n, C5150, C5150n, C5200, C5200n, C5300, C5300n, C5400, C5400dn, C5400dtn, C5400n, C5400tn, C5510n MFP. The use of compatible supplies does not void your printer warranty.