diff --git a/target/linux/bcm53xx/base-files/etc/board.d/02_network b/target/linux/bcm53xx/base-files/etc/board.d/02_network
index 317e8a5b7c..039b5fe95f 100755
--- a/target/linux/bcm53xx/base-files/etc/board.d/02_network
+++ b/target/linux/bcm53xx/base-files/etc/board.d/02_network
@@ -31,6 +31,9 @@ bcm53xx_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0:lan" "1:lan" "2:lan" "3:lan" "4:wan" "5t@eth0"
 		;;
+	asus,rt-ac88u)
+		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4 extsw" "wan"
+		;;
 	linksys,panamera)
 		ucidef_add_switch "switch1" \
 			"0:lan" "1:lan:7" "2:lan:4" "3:lan:8" "4:wan" "5t@eth0"
diff --git a/target/linux/bcm53xx/image/Makefile b/target/linux/bcm53xx/image/Makefile
index 9c3a7a9e6f..32018fe58d 100644
--- a/target/linux/bcm53xx/image/Makefile
+++ b/target/linux/bcm53xx/image/Makefile
@@ -167,6 +167,15 @@ define Device/asus_rt-ac87u
 endef
 TARGET_DEVICES += asus_rt-ac87u
 
+define Device/asus_rt-ac88u
+  $(call Device/asus)
+  DEVICE_MODEL := RT-AC88U
+  DEVICE_PACKAGES := $(BRCMFMAC_4366C0) $(USB3_PACKAGES)
+  ASUS_PRODUCTID := RT-AC88U
+  BROKEN := y
+endef
+TARGET_DEVICES += asus_rt-ac88u
+
 define Device/asus_rt-n18u
   $(call Device/asus)
   DEVICE_MODEL := RT-N18U