diff --git a/target/linux/ramips/base-files/etc/board.d/02_network b/target/linux/ramips/base-files/etc/board.d/02_network
index daf9b33..d59a450 100755
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -189,6 +189,7 @@ ramips_setup_interfaces()
 	mzk-ex750np|\
 	na930|\
 	pbr-d1|\
+	rex-wifisd2|\
 	wli-tx4-ag300n|\
 	wmr-300|\
 	wrh-300cr)
diff --git a/target/linux/ramips/base-files/etc/diag.sh b/target/linux/ramips/base-files/etc/diag.sh
index a22be5e..94be032 100644
--- a/target/linux/ramips/base-files/etc/diag.sh
+++ b/target/linux/ramips/base-files/etc/diag.sh
@@ -41,7 +41,8 @@ get_status_led() {
 	xdxrn502j)
 		status_led="$board:green:power"
 		;;
-	3g-6200nl)
+	3g-6200nl|\
+	rex-wifisd2)
 		status_led="$board:green:internet"
 		;;
 	a5-v11|\
diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
index 9b82b2a..90f8370 100755
--- a/target/linux/ramips/base-files/lib/ramips.sh
+++ b/target/linux/ramips/base-files/lib/ramips.sh
@@ -400,6 +400,9 @@ ramips_board_detect() {
 	*"RE6500")
 		name="re6500"
 		;;
+	*"REX-WIFISD2")
+		name="rex-wifisd2"
+		;;
 	*"RN502J")
 		name="xdxrn502j"
 		;;
diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index c097cfa..87f4ecd 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -111,6 +111,7 @@ platform_check_image() {
 	px-4885|\
 	rb750gr3|\
 	re6500|\
+	rex-wifisd2|\
 	rp-n53|\
 	rt5350f-olinuxino|\
 	rt5350f-olinuxino-evb|\
diff --git a/target/linux/ramips/dts/REX-WIFISD2.dts b/target/linux/ramips/dts/REX-WIFISD2.dts
new file mode 100644
index 0000000..ddf7e01
--- /dev/null
+++ b/target/linux/ramips/dts/REX-WIFISD2.dts
@@ -0,0 +1,145 @@
+/dts-v1/;
+
+#include "mt7620a.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "ratoc,rex-wifisd2", "ralink,mt7620a-soc";
+	model = "RATOC REX-WIFISD2";
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		internet {
+			label = "rex-wifisd2:green:internet";
+			gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>;
+		};
+
+		wifi {
+			label = "rex-wifisd2:blue:wifi";
+			gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&ehci {
+	status = "okay";
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x2e>;
+	mediatek,portmap = "llllw";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&ohci {
+	status = "okay";
+};
+
+&pcie {
+	status = "okay";
+
+	pcie-bridge {
+		mt76@0,0 {
+			reg = <0x0000 0 0 0 0>;
+			device_type = "pci";
+			mediatek,mtd-eeprom = <&factory 0x8000>;
+			mediatek,2ghz = <0>;
+		};
+	};
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "wled", "ephy";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+
+		partition@30000 {
+			label = "u-boot-env";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+
+		factory: partition@40000 {
+			label = "factory";
+			reg = <0x40000 0x10000>;
+			read-only;
+		};
+
+		partition@50000 {
+			label = "kernel";
+			reg = <0x50000 0x180000>;
+		};
+
+		partition@1d0000 {
+			label = "params";
+			reg = <0x1d0000 0x10000>;
+		};
+
+		partition@1e0000 {
+			label = "user_backup";
+			reg = <0x1e0000 0x10000>;
+		};
+
+		partition@1f0000 {
+			label = "user";
+			reg = <0x1f0000 0x10000>;
+		};
+
+		partition@200000 {
+			label = "rootfs";
+			reg = <0x200000 0xe00000>;
+		};
+	};
+};
+
+&wmac {
+	ralink,mtd-eeprom = <&factory 0>;
+};
diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index 1889bcf..d479010 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -462,3 +462,13 @@ define Device/kng_rc
 	zyimage -d 8997 -v "ZyXEL Keenetic Viva"
 endef
 TARGET_DEVICES += kng_rc
+
+define Device/rex-wifisd2
+  DTS := REX-WIFISD2
+  IMAGES := kernel.bin rootfs.bin
+  IMAGE/kernel.bin := append-kernel
+  IMAGE/rootfs.bin := append-rootfs | pad-rootfs
+  DEVICE_TITLE := RATOC REX-WIFISD2
+  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci
+endef
+TARGET_DEVICES += rex-wifisd2
