diff --git a/target/linux/ramips/base-files/etc/board.d/03_gpio_switches b/target/linux/ramips/base-files/etc/board.d/03_gpio_switches
index a847a64d6b..a5f9124d12 100755
--- a/target/linux/ramips/base-files/etc/board.d/03_gpio_switches
+++ b/target/linux/ramips/base-files/etc/board.d/03_gpio_switches
@@ -7,6 +7,9 @@ board_config_update
 board=$(board_name)
 
 case "$board" in
+mikrotik,rb750gr3)
+	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "17"
+	;;
 ubnt-erx)
 	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "0"
 	;;
diff --git a/target/linux/ramips/dts/RB750Gr3.dts b/target/linux/ramips/dts/RB750Gr3.dts
index da9167ad81..e0df72d967 100644
--- a/target/linux/ramips/dts/RB750Gr3.dts
+++ b/target/linux/ramips/dts/RB750Gr3.dts
@@ -7,13 +7,13 @@
 
 / {
 	compatible = "mikrotik,rb750gr3", "mediatek,mt7621-soc";
-	model = "MikroTik RB750Gr3";
+	model = "MikroTik RouterBOARD 750Gr3";
 
 	aliases {
-		led-boot = &led_pwr;
-		led-failsafe = &led_pwr;
-		led-running = &led_pwr;
-		led-upgrade = &led_pwr;
+		led-boot = &led_usr;
+		led-failsafe = &led_usr;
+		led-running = &led_usr;
+		led-upgrade = &led_usr;
 	};
 
 	memory@0 {
@@ -25,49 +25,49 @@
 		bootargs = "console=ttyS0,115200";
 	};
 
-	gpio-leds {
+	leds {
 		compatible = "gpio-leds";
 
-		led_pwr: pwr {
+		pwr {
 			label = "rb750gr3:blue:pwr";
 			gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
 		};
 
-		usr {
+		led_usr: usr {
 			label = "rb750gr3:green:usr";
 			gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
 		};
 	};
 
-	gpio-keys-polled {
+	keys {
 		compatible = "gpio-keys-polled";
 		poll-interval = <20>;
 
 		mode {
 			label = "mode";
 			gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_RFKILL>;
+			linux,code = <BTN_0>;
 		};
 
-		res {
-			label = "res";
+		reset {
+			label = "reset";
 			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
 			linux,code = <KEY_RESTART>;
 		};
 	};
 
+	beeper {
+		compatible = "gpio-beeper";
+		gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;
+	};
+
 	gpio_export {
 		compatible = "gpio-export";
 		#size-cells = <0>;
 
-		buzzer {
-			gpio-export,name = "buzzer";
-			gpio-export,output = <0>;
-			gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;
-		};
-
-		usb {
-			gpio-export,name = "usb";
+		usb_power {
+			gpio-export,name = "usb_power";
 			gpio-export,output = <1>;
 			gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
 		};
@@ -77,11 +77,10 @@
 &spi0 {
 	status = "okay";
 
-	m25p80@0 {
+	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <10000000>;
-		m25p,chunked-io = <32>;
+		spi-max-frequency = <20000000>;
 
 		partitions {
 			compatible = "fixed-partitions";
@@ -143,7 +142,8 @@
 &pinctrl {
 	state_default: pinctrl0 {
 		gpio {
-			ralink,group = "i2c", "uart2", "uart3", "pcie", "rgmii2", "jtag";
+			/* via gpio7 (uart3 group) the PoE status can be read */
+			ralink,group = "uart2", "uart3", "jtag", "wdt";
 			ralink,function = "gpio";
 		};
 	};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 3f0c4bb76e..0e5e48770c 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -339,6 +339,7 @@ define Device/mikrotik_rb750gr3
   $(Device/MikroTik)
   DTS := RB750Gr3
   DEVICE_TITLE := MikroTik RouterBOARD RB750Gr3
+  DEVICE_PACKAGES += kmod-gpio-beeper
 endef
 TARGET_DEVICES += mikrotik_rb750gr3