I just installed this cartridge and it works well immediately. I cannot yet report on its longevity. Of more interest to buyers is my experience with my last cartridge from LD. It has been in service for two years and got the expected number of page prints. It got a little noisy in its last months, but functioned fine until it finally ran out of ink. My experience is that these replacements are well priced and seem to last well. For me, the extra advantage is that these replacement cartridges do NOT have the "running out of ink" message that the original does. In my first two Samsung ones that came with the unit, these messages started a YEAR and hundreds and hundreds of pages before it ran out. I had to click that message off each time I printed a page! So LD cartridges are cheaper and less annoying.