Pro Micro ATmega32U4 5V 16MHz Replaces ATmega328 Pro Mini

Arduino Pro Mini Pro Compatible USB Programmer & Cable USA ATMEGA328P 16MHz T33

LilyPad 328 ATmega328P 16MHz Arduino-Compatible Wearable Development Board

2Pcs Pro Micro ATmega32U4 5V 16MHz Replaces ATmega328 Pro Mini

5PCS Nano Board ATmega328P, CH340G Chip 5V 16M- Unsoldered

LilyPad 328 ATmega328P Main Board compatible with Arduino

Nano V3.0 ATmega328P CH340G 5V 16M Mini-USB Microcontroller Board

Brand New Adafruit METRO #2488 with Headers - ATmega 328, US Seller