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Amazon.com: DWEII 4PCS for Nano V3.0 ATMEGA328P Module CH340C Chip 5V 16MHz Mini USB Micro-Controller Board with 4PCS Mini USB Cable Compatible with Arduino : Electronics
Amazon.com: Pro Mini Atmega168 Mini ATMEGA168 Crystal Oscillator Board Module 16M 5V for Arduino Nano Replace Atmega328 : Electronics
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REES52 USB Nano V3.0 ATmega328 CH340G 5V 16M Micro-controller board for Arduino : Amazon.in: Industrial & Scientific
Amazon.com: AITRIP 5pcs for Nano Board CH340/ATmega+328P Without USB Cable, Type-C Connection Compatible with Arduino Nano V3.0 : Electronics