diff --git a/wled00/wled.cpp b/wled00/wled.cpp
index be897d3c00..b2dcc3f3da 100644
--- a/wled00/wled.cpp
+++ b/wled00/wled.cpp
@@ -451,6 +451,10 @@ void WLED::setup()
   if (!Serial) delay(2500);  // WLEDMM allow CDC USB serial to initialise
   #endif
   #if ARDUINO_USB_CDC_ON_BOOT || ARDUINO_USB_MODE
+    #if ARDUINO_USB_CDC_ON_BOOT && (defined(CONFIG_IDF_TARGET_ESP32S3) || defined(CONFIG_IDF_TARGET_ESP32C3) || defined(CONFIG_IDF_TARGET_ESP32C6))
+    //  WLEDMM avoid "hung devices" when USB_CDC is enabled; see https://github.com/espressif/arduino-esp32/issues/9043
+    Serial.setTxTimeoutMs(0);    // potential side-effect: incomplete debug output, with missing characters whenever TX buffer is full.
+    #endif
   if (!Serial) delay(2500);  // WLEDMM: always allow CDC USB serial to initialise
   if (Serial) Serial.println("wait 1");  // waiting a bit longer ensures that a  debug messages are shown in serial monitor
   if (!Serial) delay(2500);