AK-MCP2221 – USB to Serial/I2C/GPIO | Artekit Labs
ADM00559 Microchip Technology | Mouser Deutschland
MCP2221 Breakout Module User's Guide
Dual UART/I2C Breakout Goes Both Ways | Hackaday
Adafruit MCP2221A Breakout - General Purpose USB to GPIO ADC I2C [Stemma QT / Qwiic] : ID 4471 : $6.50 : Adafruit Industries, Unique & fun DIY electronics and kits
FAQ & Troubleshooting | CircuitPython Libraries on any Computer with MCP2221 | Adafruit Learning System