This Lexmark 71B0X10 has been produced by the same people who designed your printer, who else could you possibly trust to give you the best results?Original Lexmark toner cartridges offer the very best results from your colour laser printer and the 71B0X10 shows this very well. Containing nothing but original Lexmark black toner powder, the prints produced by the 71B0X10 are incredible.Compatible with the Lexmark CS517de and all other printers mentioned on this page, the genuine 71B0X10 is an essential purchase.