This board is a version of the NodeMCU board with an ESP-12K (ESP32-S2) module on it. Please note that still takes some effort to add support for this board to ArduinoIDE or PlatformIOSpecifications:Supply voltage: Micro USB: 5V DC5V pin: 5V DC3V3 pin: 3.3V DC GPIO voltage: 3.3VChip: ESP32-S2 ESP-12K Flash memory: 4MBPSRAM: 8MBSRAM: 320KBBuilt-in Wi-Fi USB to serial converter: CH340C