diff --git a/target/linux/ramips/dts/mt7621_dlink_dir-2640-a1.dts b/target/linux/ramips/dts/mt7621_dlink_dir-2640-a1.dts
new file mode 100644
index 0000000000..323a790600
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_dlink_dir-2640-a1.dts
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621_dlink_dir-xx60-a1.dtsi"
+
+/ {
+	compatible = "dlink,dir-2640-a1", "mediatek,mt7621-soc";
+	model = "D-Link DIR-2640 A1";
+};
+
+&leds {
+	usb2_white {
+		label = "white:usb2";
+		gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+		trigger-sources = <&ehci_port2>;
+		linux,default-trigger = "usbport";
+	};
+
+	usb3_white {
+		label = "white:usb3";
+		gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+		trigger-sources = <&xhci_ehci_port1>;
+		linux,default-trigger = "usbport";
+	};
+};
+
+&wifi0 {
+	mtd-mac-address = <&factory 0xe000>;
+	mtd-mac-address-increment = <1>;
+};
+
+&wifi1 {
+	mtd-mac-address = <&factory 0xe000>;
+	mtd-mac-address-increment = <2>;
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index bb7e5a0d48..7e5266a294 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -274,6 +274,13 @@ define Device/dlink_dir-1960-a1
 endef
 TARGET_DEVICES += dlink_dir-1960-a1
 
+define Device/dlink_dir-2640-a1
+  $(Device/dlink_dir-xx60-a1)
+  DEVICE_MODEL := DIR-2640
+  DEVICE_VARIANT := A1
+endef
+TARGET_DEVICES += dlink_dir-2640-a1
+
 define Device/dlink_dir-2660-a1
   $(Device/dlink_dir-xx60-a1)
   DEVICE_MODEL := DIR-2660
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
index a492132c79..3dd2a218b9 100755
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
@@ -19,6 +19,7 @@ xzwifi,creativebox-v1)
 	ucidef_set_led_netdev "internet" "internet" "blue:internet" "wan"
 	;;
 dlink,dir-1960-a1|\
+dlink,dir-2640-a1|\
 dlink,dir-2660-a1)
 	ucidef_set_led_netdev "wan" "wan" "white:net" "wan"
 	;;
diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index 442e78df3c..b4d07f8146 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -46,6 +46,7 @@ platform_do_upgrade() {
 	asus,rt-ac65p|\
 	asus,rt-ac85p|\
 	dlink,dir-1960-a1|\
+	dlink,dir-2640-a1|\
 	dlink,dir-2660-a1|\
 	hiwifi,hc5962|\
 	linksys,ea7300-v1|\