The following cartridges (including all toner cartridges, drums, fusers & maintenance products) are guaranteed to work in the Oki B2520MFP printer.
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Can you still obtain cartridges for an OKI ES4131 printer ?
Hi Angela, unfortunately there are quite a few printers in the Oki ES range that we can't provide the toner cartridges for. This is because Oki only allow companies that provide the printer installation and technical support to sell those cartridges.