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SparkFun Pro Micro - 5V/16MHz : Electronics

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Pro Micro - 5V/16MHz - Melopero Electronics

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OSOYOO Pro Micro 5V/16MHz Module Board with 2 Row pin Header Replace wit Pro Mini for Arduino : Electronics

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Diitao 2PACK Pro Micro 5V 16MHz Atmega32U4 Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Pro Micro Serial Connection with 2-Row Pins Header : Electronics

OSOYOO 3pcs ProMicro Board ATmega32U4 Leonardo 5V/16MHz Module Board Type C Port for Arduino : Electronics

Arduino Pro Micro 5V 16MHz [Generic] :: Micro JPM

OSOYOO Pro Micro 5V/16MHz Module Board with 2 Row pin Header Replace wit Pro Mini for Arduino : Electronics

Adafruit Pro Trinket - 3V 12MHz - Melopero Electronics

Adafruit Pro Trinket - 5V 16MHz - Melopero Electronics