OKI 420dn Manual De Usuario

Notes, Cautions and Warnings > 5

For the protection of your product, and in order to ensure that you benefit from its full 

functionality, this model has been designed to operate only with genuine original toner 

cartridges. Any other toner cartridge may not operate at all, even if it is described as 

“compatible”, and if it does work, your product's performance and print quality may be 

degraded.
Specifications subject to change without notice. All trademarks acknowledged.