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Aaron1 ATMEGA328P-PU Microcontroller Chip for UNO R3£¬ UNO£¬ 328 (2PCS)
With this chip£¬ you can upgrade you Arduino UNO/328 to Arduino UNO R3; can be used to replace chip of Arduino UNO R3/UNO/328 main board; driver program has been pre-installed in the chip.