Hi, Hellweaver. Thank you for your quick reply. What a pity you don’t like the colorful design.
For your question, as long as the signal pin sequence is the same, IIC port on the board will be compatible with the Adafruit Stemma/Sparkfun qwiic module. However, even you could plug it in Grove interface, these two interfaces are not the exactly the same on their shape, we do not recommend to do so for avoiding unexpectable damage of the connector.
P.S.: Grove - Qwiic Hub could allow you to either use Qwiic/STEMMA QT modules on Grove controller or use Grove modules on Qwiic/STEMMA QT controller. Please refer to:
The card slot is designed for expanding memory, so yes you could put circuit python code on it as well as other libraries you need, which makes more possibilities for Seeeduino XIAO.
We currently released a Seeed Ranger Program. Seeed Ranger could apply for free Seeed Products for project use from time to time. Should you be interested in this program, please visit: