Pro Micro Leonardo - 5V/16MHz
The Pro Micro Leonardo is similar to the Pro Mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on-board and do away with bulky external USB interface.
SparkFun 12640 Pro Micro - 5V/16MHz
Pro Micro ATmega32U4 5V 16MHz Leonardo With 1M MicroUSB Cable – Envistia Mall
Arduino Pro Micro ATmega32U4-MU 5V/16MHz Module with Type-C USB
New Pro Micro Atmega32u4 5v/16mhz Module 2 Row Pin Header - Temu
New Pro Micro Atmega32u4 5v/16mhz Module 2 Row Pin Header - Temu
Features: Pro Micro Leonardo - 5V/16MHz -micro-USB ATmega32U4 running at 5V/16MHz with Arduino Leonardo
Pro Micro Leonardo - 5V/16MHz -micro-USB
With ATmega32U4, running at 5V/16MHz. Supported under IDE v1.0.1. 12 x Digital I/Os (5 are PWM capable). Rx and Tx Hardware Serial Connections.
diymore Arduino Pro Micro 16MHz 5V with 2-Row Pins Header Module Board ATmega32U4 Module Board Micro USB Pro Micro Development Board Microcontroller
New Pro Micro Atmega32u4 5v/16mhz Module 2 Row Pin Header - Temu
Arduino Micro — Arduino Official Store
Pro Micro Leonardo - 5V/16MHz