diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index adfb03ccfa28ef721662699956bea0c21b143e37..30e40fbffbfb95ec3c481ae53187ae877a040b8f 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -633,13 +633,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 748646596de7a53d865afcd84fd90f1755e7c7c1..719edd51a75da9d523086a9bce8ab1b995480345 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -8797,13 +8797,13 @@ inline void gcode_M503() {
#if ENABLED(LIN_ADVANCE)
/**
- * M905: Set and/or Get advance K factor and WH/D ratio
+ * M900: Set and/or Get advance K factor and WH/D ratio
*
* K<factor> Set advance K factor
* R<ratio> Set ratio directly (overrides WH/D)
* W<width> H<height> D<diam> Set ratio from WH/D
*/
- inline void gcode_M905() {
+ inline void gcode_M900() {
stepper.synchronize();
const float newK = code_seen('K') ? code_value_float() : -1;
@@ -10264,8 +10264,8 @@ void process_next_command() {
#endif // DUAL_X_CARRIAGE
#if ENABLED(LIN_ADVANCE)
- case 905: // M905: Set advance K factor.
- gcode_M905();
+ case 900: // M900: Set advance K factor.
+ gcode_M900();
break;
#endif
diff --git a/Marlin/configuration_store.cpp b/Marlin/configuration_store.cpp
index ced713b804cedd75b6a2154514e2402b43da3d1f..c87a15867cfd481d2a1dec556340d5fc43272a01 100644
--- a/Marlin/configuration_store.cpp
+++ b/Marlin/configuration_store.cpp
@@ -150,8 +150,8 @@
* 576 M906 E4 stepperE4 current (uint16_t)
*
* LIN_ADVANCE: 8 bytes
- * 580 M905 K extruder_advance_k (float)
- * 584 M905 WHD advance_ed_ratio (float)
+ * 580 M900 K extruder_advance_k (float)
+ * 584 M900 WHD advance_ed_ratio (float)
*
* 588 Minimum end-point
* 1909 (588 + 36 + 9 + 288 + 988) Maximum end-point
@@ -1665,7 +1665,7 @@ void MarlinSettings::reset() {
SERIAL_ECHOLNPGM("Linear Advance:");
}
CONFIG_ECHO_START;
- SERIAL_ECHOPAIR(" M905 K", planner.get_extruder_advance_k());
+ SERIAL_ECHOPAIR(" M900 K", planner.get_extruder_advance_k());
SERIAL_ECHOLNPAIR(" R", planner.get_advance_ed_ratio());
#endif
}
diff --git a/Marlin/example_configurations/Cartesio/Configuration_adv.h b/Marlin/example_configurations/Cartesio/Configuration_adv.h
index 1e7a13c1ceab666d000eb7509e1c228a0b99bae2..86826d36e37b2130fb2aa9e92704c8e39ee534dc 100644
--- a/Marlin/example_configurations/Cartesio/Configuration_adv.h
+++ b/Marlin/example_configurations/Cartesio/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/Felix/Configuration_adv.h b/Marlin/example_configurations/Felix/Configuration_adv.h
index fef4bf0a5e512ba05fd513edec256f764416323f..c7b37ce911bd37111e12f60aa640967ffce75761 100644
--- a/Marlin/example_configurations/Felix/Configuration_adv.h
+++ b/Marlin/example_configurations/Felix/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/Hephestos/Configuration_adv.h b/Marlin/example_configurations/Hephestos/Configuration_adv.h
index 43ea5654e3750d6835e743dc2d91b02d95286c20..45206ef5fd2539b0d086296b62e21738f1d0b846 100644
--- a/Marlin/example_configurations/Hephestos/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/Hephestos_2/Configuration_adv.h b/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
index 7001e573c07b4cac592e575abb59904a85f15848..19ef14cb5c23a45935af5c29a293cfad1d1fc584 100644
--- a/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
@@ -614,13 +614,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/K8200/Configuration_adv.h b/Marlin/example_configurations/K8200/Configuration_adv.h
index a3ee7f353f69c85978d191b1c5ec221ee8e1d8b7..d87896b02a0367e1bb43d2b900985f3191f963c4 100644
--- a/Marlin/example_configurations/K8200/Configuration_adv.h
+++ b/Marlin/example_configurations/K8200/Configuration_adv.h
@@ -643,13 +643,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/K8400/Configuration_adv.h b/Marlin/example_configurations/K8400/Configuration_adv.h
index f76fa256e9e24d96f19f28ab27cb74644f968575..509ee750d27621779d7709e34012667ccb6e18b8 100644
--- a/Marlin/example_configurations/K8400/Configuration_adv.h
+++ b/Marlin/example_configurations/K8400/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/RigidBot/Configuration_adv.h b/Marlin/example_configurations/RigidBot/Configuration_adv.h
index 7a5be5249a6b35c2b3230b361754444508a39812..05d5c3750a97dda577affe8163fcc37907032fc4 100644
--- a/Marlin/example_configurations/RigidBot/Configuration_adv.h
+++ b/Marlin/example_configurations/RigidBot/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/SCARA/Configuration_adv.h b/Marlin/example_configurations/SCARA/Configuration_adv.h
index 90e13e3654afe26c91cdb7e31e59cc4ca352f02a..220f0d79ee0b7ce2810923779d5882b485ee93cb 100644
--- a/Marlin/example_configurations/SCARA/Configuration_adv.h
+++ b/Marlin/example_configurations/SCARA/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/TAZ4/Configuration_adv.h b/Marlin/example_configurations/TAZ4/Configuration_adv.h
index 90645264385634b52a2f20902172cb850b03d60d..5134ff6b4744778dbc3ad699852098b38f539f4c 100644
--- a/Marlin/example_configurations/TAZ4/Configuration_adv.h
+++ b/Marlin/example_configurations/TAZ4/Configuration_adv.h
@@ -638,13 +638,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/TinyBoy2/Configuration_adv.h b/Marlin/example_configurations/TinyBoy2/Configuration_adv.h
index 3fa4f0b055ad137112796d752a87cfa99a07a178..9ed9943612ea6b1f840dfca8e1d109a43c2e8427 100644
--- a/Marlin/example_configurations/TinyBoy2/Configuration_adv.h
+++ b/Marlin/example_configurations/TinyBoy2/Configuration_adv.h
@@ -633,13 +633,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/WITBOX/Configuration_adv.h b/Marlin/example_configurations/WITBOX/Configuration_adv.h
index 43ea5654e3750d6835e743dc2d91b02d95286c20..45206ef5fd2539b0d086296b62e21738f1d0b846 100644
--- a/Marlin/example_configurations/WITBOX/Configuration_adv.h
+++ b/Marlin/example_configurations/WITBOX/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration_adv.h b/Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration_adv.h
index e2c7e024c9249808705b0cf90577fdd87ac66c78..220bfa47137cd2525c561504e54dda05b32bc9da 100644
--- a/Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration_adv.h
@@ -654,13 +654,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h b/Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h
index 7d4a2c0c2177b1656be68bb9b45349ab5657d36f..eed1171b9eac3c60abedc0e4655302d88b2d484b 100644
--- a/Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h
@@ -654,13 +654,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/delta/generic/Configuration_adv.h b/Marlin/example_configurations/delta/generic/Configuration_adv.h
index ee2df57ebbdddc55f845e01c58db3b72ca7b3805..7de00f0806fcae215d29d2b4adfc2eba338c80a9 100644
--- a/Marlin/example_configurations/delta/generic/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/generic/Configuration_adv.h
@@ -651,13 +651,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
index ee2df57ebbdddc55f845e01c58db3b72ca7b3805..7de00f0806fcae215d29d2b4adfc2eba338c80a9 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
@@ -651,13 +651,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
index a57c2bf35e827d22d955b243aaa3d1eb88f6607e..40e7259edb67f88e0d9ac863b9f69cb7c3c61585 100644
--- a/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
@@ -657,13 +657,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
index 08ba347da86b9082333239e2e391404ffc592647..8268e42930edc11708cb6ed2674c7dc12184971a 100644
--- a/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
@@ -651,13 +651,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/makibox/Configuration_adv.h b/Marlin/example_configurations/makibox/Configuration_adv.h
index fc5a716fa9f270fac62a742dbe9aecb1ca3794b8..7f752213dc2f8cd7d48ef0e508bf3190c857bf73 100644
--- a/Marlin/example_configurations/makibox/Configuration_adv.h
+++ b/Marlin/example_configurations/makibox/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
index 78db8e1d53233bd87fd086cf1aeaf5d01ccaeafa..cfb3fc2b46ebdcb8d45dcb91a3ed975b4c9a7a60 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
@@ -630,13 +630,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.
diff --git a/Marlin/example_configurations/wt150/Configuration_adv.h b/Marlin/example_configurations/wt150/Configuration_adv.h
index ea7644e711fea6327e12f4e431b06a07f25e6532..73c43f17f31299b63323ae2d0bd6a98e0296f1d7 100644
--- a/Marlin/example_configurations/wt150/Configuration_adv.h
+++ b/Marlin/example_configurations/wt150/Configuration_adv.h
@@ -633,13 +633,15 @@
* to a fixed value. Note that using a fixed ratio will lead to wrong nozzle pressures
* if the slicer is using variable widths or layer heights within one print!
*
- * This option sets the default E:D ratio at startup. Use `M905` to override this value.
+ * This option sets the default E:D ratio at startup. Use `M900` to override this value.
*
- * Example: `M905 W0.4 H0.2 D1.75`, where:
+ * Example: `M900 W0.4 H0.2 D1.75`, where:
* - W is the extrusion width in mm
* - H is the layer height in mm
* - D is the filament diameter in mm
*
+ * Example: `M900 R0.0458` to set the ratio directly.
+ *
* Set to 0 to auto-detect the ratio based on given Gcode G1 print moves.
*
* Slic3r (including Prusa Slic3r) produces Gcode compatible with the automatic mode.