diff --git a/configuration/boards/ldo-orbitool-o2s/board-definition.json b/configuration/boards/ldo-orbitool-o2s/board-definition.json
index ae91bfaef..43ab614e9 100644
--- a/configuration/boards/ldo-orbitool-o2s/board-definition.json
+++ b/configuration/boards/ldo-orbitool-o2s/board-definition.json
@@ -13,7 +13,8 @@
 	"disableAutoFlash": false,
 	"driverVoltages": [24],
 	"hasMcuTempSensor": true,
-	"invertPinLogic": ["PB0","PB15"],
+	"invertPinLogic": ["PA10","PB15"],
+	"fourPinFanConnectorCount": 2,
 	"driverCount": 1,
 	"integratedDrivers": {
 		"extruder": "LDO-2240-UART"
@@ -57,10 +58,7 @@
 			"parameters": {
 				"max_power": 1,
 				"enable_pin": "PB14",
-				"shutdown_speed": 0,
-				"tachometer_pin": "PA14",
-				"tachometer_ppr": 2,
-				"tachometer_poll_interval": 0.00005
+				"shutdown_speed": 0
 			}
 		},
 		"heater_fan": {
@@ -68,10 +66,7 @@
 			"parameters": {
 				"max_power": 1,
 				"cycle_time": 0.0001,
-				"shutdown_speed": 0,
-				"tachometer_pin": "PB12",
-				"tachometer_ppr": 2,
-				"tachometer_poll_interval": 0.00005
+				"shutdown_speed": 0
 			}
 		},
 		"output_pin": {
diff --git a/configuration/boards/ldo-orbitool-o2s/toolboard-config.cfg b/configuration/boards/ldo-orbitool-o2s/toolboard-config.cfg
index 195744447..9776673af 100644
--- a/configuration/boards/ldo-orbitool-o2s/toolboard-config.cfg
+++ b/configuration/boards/ldo-orbitool-o2s/toolboard-config.cfg
@@ -14,9 +14,10 @@ aliases:
 	bltouch_sensor_pin=PB7, bltouch_control_pin=PB9,
 	probe_pin=PA15,
 	# adxl345 cs pin
-	adxl345_cs_pin=PA4
+	adxl345_cs_pin=PA4,
 	# fans
-	fan_part_cooling_pin=PB0,
-	fan_toolhead_cooling_pin=PB15
+	fan_part_cooling_pin=PA10,
+	fan_toolhead_cooling_pin=PB15,
 	# 4 pin fans
-	4p_fan_toolhead_cooling_tach_pin=PA14,
\ No newline at end of file
+	4p_fan_part_cooling_pin=PB0, 4p_fan_part_cooling_tach_pin=PA14,
+	4p_toolhead_cooling_pin=PB15, 4p_toolhead_cooling_tach_pin=PB12,