Espressif ESP-WROOM-32U.4GHz 4M 8M 16M U.FL Connector (Bluetooth and WiFi Low Power Module ESP32U

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ESP32-WROOM-32D and ESP32-WROOM-32U are powerful, generic Wi-Fi+BT+BLE MCU modules that target a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding.
ESP32-WROOM-32U is different from ESP32-WROOM-32D in that ESP32-WROOM-32U integrates a U.FL connector.
For detailed information of the U.FL connector please see Chapter 10. Note that the information in this datasheet is applicable to both modules.
Any differences between them will be clearly specified in the course of this document. Table 1 lists the difference between ESP32-WROOM-32D and ESP32-WROOM-32U.