Datasheet

GND - common ground for power and logic

 I2C Logic Pins

SCL - I2C clock pin, connect to your microcontroller I2C clock line. This pin is level shifted so you can use 3-5V

logic, and there's a 4.7K pullup on this pin.

SDA - I2C data pin, connect to your microcontroller I2C data line. This pin is level shifted so you can use 3-5V

logic, and there's a 4.7K pullup on this pin.

STEMMA Connectors

STEMMA QT (https://adafru.it/Ft4) - These connectors on the back of this breakout allow you to connect to dev

boards with STEMMA QT connectors or to other things with various associated accessories (https://adafru.it/Ft6)