The EPSON Stylus Pro cartridges have "smart" chip. This device resets these chips to allow you to refill your cartridges.
This chip resetter is compatible with the following cartridges:
T5961, T5962, T5963, T5964, T5965, T5966, T5967, T5968, T5969, T596A, T596B, T596C, T6361, T6362, T6363, T6364, T6365, T6366, T6367, T6368, T6369, T636A, T636B, T6420, T6421, T6422, T6423, T6424, T6425, T6426, T6427, T6428, T6429, T642A, T642B, T642C
It is designed for the following printers:
EPSON Stylus Pro 7700, 7890, 7900, 9700, 9890 and 9900