10pcs atmega328 atmega328p-pu dip28 with pre-uno R3 bootloader

2pcs ATmega328P CH340 Development Board Compatible with Arduino UNO R3 Board ...

yddmyo Atmega328P-PU Atmega328P Replacement Chip for Arduino UNO R3 Bootloade...

3 PCS PreSoldered Pro Mini ATmega328P MCU 5V 16MHz Development Board Arduino

Leonardo R3 Microcontroller Development Board with USB Cable Kit for Arduino ...

UNO R3 Development Board Gold Edition ATmega328P Type-C Board Compatible with...

3 PCS Pro Mini ATmega328P 5V 16MHz Replace ATmega128 DC5V Board For Arduino

Nano Flip ATmega328P Microcontroller Development Board 2-Pack (Arduino Nano )