Compatible Printers: OKI Pro 9431 DMe. OKI Pro 9541 dn. OKI Pro 9542 dn. OKI Pro 9431 Series. OKI Pro 9542 Ev. OKI Pro 9431 dn. OKI Pro 9541 Ev. OKI ES 9541. OKI Pro 9541 Ec. OKI Pro 9542 Series. OKI ES 9431. OKI Pro 9431 Ec. OKI Pro 9542 Ec. OKI Pro 9431 Ev
