What is this nasty clone? Running at quarter speed! - Avrdude, stk500, Bootloader issues - Arduino Forum
WAVGAT pseudo-clone] Issues and Troubleshouting - IDE 1.x - Arduino Forum
1set Uno R3 Official Box Atmega16u2 / Uno+wifi R3 Mega328p Chip Ch340g For Arduino Uno R3 Development Board Wemos Esp8266 - Integrated Circuits - AliExpress
EEPROM.H Apparently working but not saving data on Uno R3 WAVGAT - Storage - Arduino Forum