diff --git a/platformio.ini b/platformio.ini
index d089ec21..1b394c47 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -453,6 +453,7 @@ board_build.partitions = tools/WLED_ESP32_4MB_1MB_FS.csv
 build_flags = ${common.build_flags} ${esp32c3.build_flags} -D WLED_RELEASE_NAME=ESP32-C3
   -D WLED_WATCHDOG_TIMEOUT=0
   ; -DARDUINO_USB_CDC_ON_BOOT=1 ;; for virtual USB
+  -DARDUINO_USB_CDC_ON_BOOT=0 ;; no virtual USB
   -D CONFIG_LITTLEFS_FOR_IDF_3_2 ; WLEDMM
   -D WLED_USE_MY_CONFIG ; WLEDMM
   ; -D USERMOD_AUDIOREACTIVE ; WLEDMM
@@ -1003,8 +1004,7 @@ build_flags = ${common.build_flags} ${esp32.build_flagsV4} ${esp32s2.build_flags
   -D BTNPIN=0
   ;-D RLYPIN=6
   ;-D IRPIN=7
-  -D HW_PIN_SCL=40
-  -D HW_PIN_SDA=41
+  -D HW_PIN_SCL=40 -D HW_PIN_SDA=41
   -D HW_PIN_MOSISPI=35 ;WLEDMM renamed from HW_PIN_DATASPI
   -D HW_PIN_CLOCKSPI=36
   -D HW_PIN_MISOSPI=37
@@ -1051,16 +1051,16 @@ build_flags = ${common.build_flags} ${esp32.build_flagsV4} ${esp32c3.build_flags
   -Wno-misleading-indentation -Wno-format-truncation
   -D WLED_RELEASE_NAME=esp32c3dev_4MB_max
   ; -DARDUINO_USB_CDC_ON_BOOT=1  ;; enable CDC USB -> needed for debugging over serial USB
+  -DARDUINO_USB_CDC_ON_BOOT=0    ;; disable CDC USB
   -D SERVERNAME='"WLED-C3"'
   ;-D WLED_DISABLE_INFRARED ;; save flash space
   ;-D WLED_DISABLE_ALEXA    ;; save flash space
   -D LEDPIN=8 ;; onboard neopixel 5x5 Matrix. Attach your own LEDs to GPIO 20
   -D BTNPIN=9
-  -D STATUSLED=10 ;; onboard LED
+  ; -D STATUSLED=10 ;; onboard LED
   ;-D RLYPIN=3
   ;-D IRPIN=2
-  ;-D HW_PIN_SCL=1 ;; for I2C Qwiic connector
-  ;-D HW_PIN_SDA=0 ;; for I2C Qwiic connector
+  ;-D HW_PIN_SDA=0 -D HW_PIN_SCL=1 ;; for I2C Qwiic connector
   -D SR_DMTYPE=1 -D I2S_SDPIN=5 -D I2S_WSPIN=6 -D I2S_CKPIN=4 -D MCLK_PIN=7
   -D WLED_USE_MY_CONFIG