Sorry it took so long for my reply. On 02-02-2917 I installed 4 ink cartridges that were not made by Epson. After the initial startup prompt that they were not Epson Ink Cartridges installed. I have printed about 75 pages and have not been bugged about the wrong cartridges. Maybe installing 4 new, non Epson cartdiges at the same time helped. If I have any problens down the lineI will let you know.