The replacement boards work fine . Up a running again

Its not the usb port. tried a new usb cable in usb2,usb3 and powered usb ports and got the same brownout fault. The second esp32 board I bought, which is provisioned as a BLE_server, works with all usb cables and usb ports.

After uploading this IDE sketch (based on BLEclient example): #include "BLEDevice.h" ...some code... void setup() { //Start serial communication Serial.begin(115200); //Init BLE device BLEDevice::init("THC Controller"); BLEScan* pBLEScan = BLEDevice::getScan(); pBLEScan->setAdvertisedDeviceCallbacks...