Simplyitem &copy; Yellow 406478 Toner Refill with chip for Ricoh SP C231N C231SF,C232DN,C232SF,C242DN,C242SF,C312DN,C320DN,C311N 60 days money back guarantee High Yield Toner Refill (180g) + Chips Non-oem not made by Ricoh Easy follow instruction Video also avaiable