Lenovo Pen Pro Quick Start Manual page 2

Before using the product, ensure that you read the safety documentation that comes with the product. To charge the pen, connect the pen to a USB-C port of
the computer with a USB-C cable.
使用本產品之前，請務必閱讀產品隨附的安全文件。如果要為本產品充電，請使用USB-C線纜通過您電腦USB孔進行充電。