Producing a mono toner cartridge that works perfectly with your black and white laser printer is best left to the manufacturer of your printer. That is why we recommend the purchase of the Kyocera 1T02S50NL0 wherever possible, for all compatible printers. Each of these Kyocera TK1170 toner cartridges has been precisely manufactured, not only to fit perfectly, but also offer you the very best results.The 7,200 page estimated yield of the genuine Kyocera 1T02S50NL0 toner cartridge makes it a fairly economically sound purchase too. This original Kyocera TK1170  is compatible with the ECOSYS M2040dn and any of the other printers mentioned on this page.