The SeeedStudio XIAO ePaper Display Board (nRF52840) - EN04 is designed for low-power ePaper applications, including digital signage and electronic labels. It is powered by the XIAO nRF52840 Plus and supports both 24-pin and 50-pin ePaper displays. The board includes a JST 2.0 mm battery connector with a power switch and a built-in charging IC. It features one reset button and three user buttons, enhancing its functionality. Additionally, it is compatible with Arduino, Platform IO, and ESPHome, and includes an onboard NFC interface for tap-to-configure capabilities.