資料來源:https://www.seeedstudio.com/Xadow---Main-Board-p-1524.html
The module is a microcontroller board based on the controller ATmega32U4 with 32k flash. Board can be powered either from the USB connection or a Lithium battery(80mA output current). And the board can charge for the Lithium battery through the USB port. The USB port on the board can be also used for upload program.When you upload program to the Xadow Main Board as you do with other Arduino boards, please select"Seeeduino Xadow"from the Tools > Board menu. It is a indispensable part in the Xadow Kit.
Note: This module is not compatible with any other Xadow version 2 or RePhone modules.
該模組是基於控制器 ATmega32U4 的單片機板, 具有32k 閃光燈。主機板可以從 USB 連接或鋰電池 (80 毫安培輸出電流) 供電。主機板可以通過 USB 埠對鋰電池充電。主機板上的 USB 埠也可用於上傳程式。當您將程式上載到 Xadow 主機板時, 與其他 Arduino 板一樣, 請從 "工具 > 主機板" 功能表中選擇 "Seeeduino Xadow"。它是 Xadow 套件中不可缺少的部分。
注意: 此模組與任何其他 Xadow 版本2或 RePhone 模組不相容。