diff --git a/optimized_user_settings.cfg b/optimized_user_settings.cfg
index 5c6bf4d..e6b5647 100644
--- a/optimized_user_settings.cfg
+++ b/optimized_user_settings.cfg
@@ -67,23 +67,37 @@ value: 0
 # - spi_bus: spi2
 # ============================================================================
 
-# Neptune 4 Plus built-in ADXL345 (use this if Cartographer ADXL fails)
-[adxl345]
-cs_pin: PG11
-spi_bus: spi2
-axes_map: x, y, z
+# ============================================================================
+# ADXL345 ACCELEROMETER - DISABLED
+# ============================================================================
+# ADXL is disabled by default. Enable ONE option below if you have ADXL:
+#
+# Option 1: Neptune 4 Plus built-in (requires Klipper on printer MCU)
+# [adxl345]
+# cs_pin: PG11
+# spi_bus: spi2
+# axes_map: x, y, z
+#
+# Option 2: Cartographer integrated (V3 or V4)
+# [adxl345]
+# cs_pin: cartographer:PA3    # V3
+# cs_pin: cartographer:PA0    # V4
+# spi_bus: spi1
+# axes_map: x, y, z
+#
+# Option 3: External ADXL345 on RPI (USB SPI adapter)
+# [adxl345]
+# cs_pin: spidev1.0
+# spi_speed: 5000000
+# axes_map: x, y, z
+# ============================================================================
 
-# Cartographer ADXL (alternative - comment out above, uncomment below)
-#[adxl345]
-#cs_pin: cartographer:PA3    # V3
-#cs_pin: cartographer:PA0    # V4
-#spi_bus: spi1
-#axes_map: x, y, z
+# ADXL345 is disabled - uncomment one option above if needed
+# [resonance_tester] requires ADXL to be enabled
 
-[resonance_tester]
-accel_chip: adxl345
-probe_points: 165, 165, 20
-    165, 165, 20
+# [resonance_tester]
+# accel_chip: adxl345
+# probe_points: 165, 165, 20
 
 # ============================================================================
 # FILAMENT SENSORS
diff --git a/user_settings_clean.cfg b/user_settings_clean.cfg
index 17b13e9..9f15045 100644
--- a/user_settings_clean.cfg
+++ b/user_settings_clean.cfg
@@ -67,22 +67,38 @@ value: 0
 # - spi_bus: spi2
 # ============================================================================
 
-# Neptune 4 Plus built-in ADXL345 (use this if Cartographer ADXL fails)
-[adxl345]
-cs_pin: PG11
-spi_bus: spi2
-axes_map: x, y, z
+# ============================================================================
+# ADXL345 ACCELEROMETER - DISABLED
+# ============================================================================
+# ADXL is disabled by default. Enable ONE option below if you have ADXL:
+#
+# Option 1: Neptune 4 Plus built-in (requires Klipper on printer MCU)
+# [adxl345]
+# cs_pin: PG11
+# spi_bus: spi2
+# axes_map: x, y, z
+#
+# Option 2: Cartographer integrated (V3 or V4)
+# [adxl345]
+# cs_pin: cartographer:PA3    # V3
+# cs_pin: cartographer:PA0    # V4
+# spi_bus: spi1
+# axes_map: x, y, z
+#
+# Option 3: External ADXL345 on RPI (USB SPI adapter)
+# [adxl345]
+# cs_pin: spidev1.0
+# spi_speed: 5000000
+# axes_map: x, y, z
+# ============================================================================
 
-# Cartographer ADXL (alternative - comment out above, uncomment below)
-#[adxl345]
-#cs_pin: cartographer:PA3    # V3
-#cs_pin: cartographer:PA0    # V4
-#spi_bus: spi1
-#axes_map: x, y, z
+# ADXL345 is disabled - uncomment one option above if needed
+# [resonance_tester] requires ADXL to be enabled
 
-[resonance_tester]
-accel_chip: adxl345
-probe_points: 165, 165, 20
+# [resonance_tester]
+# accel_chip: adxl345
+# probe_points: 165, 165, 20
+# Enable above after configuring [adxl345]
     165, 165, 20
 
 # ============================================================================