1.Chip Decoder is suitable for Epson stylus GS6000 printer 2.This system is made by 2decoder board: 1)A /right decoder has 4 color:BK C M Y 2)B/left decoder has 4 color:LC LM O G 3.When you install the GS6000 decoder,you should not need chip ,the printer can work. we also have refillable cartridge without chip for Epson GS6000,you can used the refillable cartridge with decoder