OKI develops and makes its own consumables to ensure the best performance from our printers. While there seems to be many choices of replacement consumable for OKI® toner-based printers—including some from non-printer companies—only one brand is recommended for use in our machines: genuine OKI toner.Compatible Printers: OKI B 2500 Series. OKI Okioffice 2530. OKI Okioffice 2510. OKI B 2500 MFP. OKI Okifax 2510. OKI B 2540 MFP. OKI Okioffice 2500 Series. OKI B 2520 MFP
