Pci canon cartridge 128 3500b001aa black toner cartridge 2.1k yield made in theu.S.A.For canon imageclass d550, mf4412, mf4420, mf4450, mf4550, mf4570, mf4770, mf4880, taa compliant, mps ready, premium compatibles inc.Pci brand 3500b001a