for: ml-1910/1915/2525/2525w/2540/2545/2580nscx-4600also included is a print drumoriginal samsung 2500 black toner cartridgees have been developed for use in your samsung printer to deliver quality print results. you get top performance, 100% reliability and impressive quality every time you print.specially optimized for unrivaled quality.with samsung high-yield toner, your prints will have crystal-clear details and vivid colors. even small text is sharp and easy to read.trust only original samsung toner cartridgees.always use genuine samsung toners to avoid damage to the printer and other problems.blacklaser printing technologyyield (black white) 2, 500 pagesannotation on page yieldthe yield value shown is iso/iec 19752. the operating environment, print interval, graphics, media type, and media size may affect the actual number of pages.operational requirementsoperating temperature range10 to 30? coperating temperature range50-86? fstorage temperature range20 to 40? cstorage temperature range4 to 104? fstorage humidity10 to 90% rh