Banana Pi BPI-M2S public sale
Aliexpress online shop:
SINOVOIP: https://www.aliexpress.us/item/3256804873095293.html
BIPAI: https://www.aliexpress.us/item/3256804873308120.html
Taobao online shop:
https://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-5702805387.9.2c3c159aK33lv9&id=695345271372
online wiki documents: https://wiki.banana-pi.org/Banana_Pi_BPI-M2S