I recently purchased 3 each of the LC401XL Brother compatible cartridges in cyan, yellow, magenta and black. The reason for my order was because the LD Products Brother compatible cartridges that I had been using no longer worked in my printer. No matter what I tried did not work, power down, restart etc. I would just get a red X in the cartridge replaced and that's after installing a brand new cartridge! Well when I installed my Inkjets LC401XL voila the printer cleared and worked normally. The Inkjets Brother compatible cartridges lock in just like the OEM Brother cartridges which is a good thing, the LD Products do not. I am completely happy with the print quality and quantity of printed pages with my Inkjets Brother compatible cartridges. I am now a loyal Inkjets customer!