I bought 2 of these in December and finally got around to using them in February. It's now 2 days after the return date and I'm stuck with 2 ink cartridges that don't work because they jam the printer when trying to print. When I put in a premium brand toner cartridge (also bought from Amazon) the printer works fine. Then I go back and paste v4ink and it clogs the printer again. There are other vendors that sell this cartridge and I've had better luck with them. Shame on me for cheating, shame on you v4ink for making a poor quality product.