Bought this replacement cartridge from Amazon. Unusually , I had to re-start the whole system to pick up the fact that a new Cartridge had been installed.(The printer would produce test-pages from within the printer software, but ignored all pages sent from the Computer... until I'd switched off everything, and I do mean killing the power, not just re-starting Windows.) This minor blip now accounted for, the printer is doing it's job well, & like all my other Brother printers is doing exactly what it says on the tin. Gave up on Samsungs, HPs etc. After many years of buying mixed-brands... Brother have come out way-in-front in my personal opinion, & I only use one old HPLJ now. I have 7 pieces of Brother equipment in two offices & they give the least problems (none really) of all the hardware.