This is a compatible toner cartridge not manufactured by OKI. It is a compatib...This is a compatible toner cartridge not manufactured by OKI. It is a compatible cartridge and works with OKI printers. Toner cartridge for use with oki-okidata b410 b410dn b420 b420dn b430 b430dn b440. Compatible with Oki-Okidata 43979101 - Black....more