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ATmega328 running at 16MHz with external resonator. USB connection off board. DC input 5V up to 12V. RoHS Compliant. The Arduino Pro Mini 328 - 5V/16MHz is a 5V Arduino running the 16MHz bootloader. Arduino Pro Mini does not come with connectors populated so that you can solder in any connector or wire with any orientation you need.

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Pro Micro With The Bootloader Black/blue Atmega32u4 5v/16mhz Module Controller Mega32u4 Leonardo For Arduino - Integrated Circuits - AliExpress

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The Micro is a microcontroller board based on the ATmega32U4, developed in conjunction with Adafruit. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started. It has a form factor that enables it to be easily placed on a breadboard.

Arduino 5V Micro with Headers