Seeed Studio XIAO nRF52840 Plus, powered by Nordic chipset with FPU, brings more SMD pins to our popular Bluetooth-enabled board. While maintaining all the capabilities of the standard version including Bluetooth 5.0, NFC, and low power consumption, this Plus variant features redesigned castellations and pad layout on the back, offering 9 additional GPIOs specifically for advanced Bluetooth projects requiring expanded I/Os via SMD board-to-board soldering.
https://www.seeedstudio.com/Seeed-Studio-XIAO-nRF52840-Plus-p-6359.html
More about Seeed Studio XIAO: https://www.seeedstudio.com/xiao-series-page
The author marked this model as their own original creation.