I try to connect a 4 Digit 7 segment display with an Adafruit Featherwings to the Arduino UNO. https://learn.adafruit.com/adafruit-7-segment-led-featherwings/pinouts
They highligthed 2x 2 pins showing I2C and the Power pins, but there are no pin labels on the PCB.
Please, which one is Clock, Data, +3V and GND?
Thank you very much for your kind help. Wedilo