SWDIO Debugging/Programming on Xiao?

[Criticalpoint]

I noticed that the bottom of the XIAO has pads I didn’t know about. I see on the schematic that they are for debugging and programming. That’s fantastic!

However… I may have counterfeits because the bottom of my boards have 4 pads instead of the two I see on this site.

Is this what the bottom is supposed to look like?

[Baozhu]

@jiachenglu Check out this question to see if we need update the Wiki image.

[jiachenglu]

Hi @Criticalpoint
Here is the difference pad between the new and old version. Thanks for your reminder, I will update it to our wiki of XIAO.