Oki Black Toner Cartridge. For use in B411/B431 series printers. Approximate page yield 3,000. OEM: 44574702Compatible Printers: OKI MB 471, OKI B 411 D, OKI B 431 D, OKI B 431 DN, OKI MB 461, OKI MB 471 w, OKI B 411 DN, OKI MB 491, OKI B 431 DN plus, OKI MB 491 Plus, OKI MB 491 Plus LP