diff --git a/bootloader/mbed-bootloader-m263_iot-block_device-kvstore-v4.1.0.bin b/bootloader/mbed-bootloader-m263_iot-block_device-kvstore-v4.1.0.bin
new file mode 100644
index 0000000..ee42516
Binary files /dev/null and b/bootloader/mbed-bootloader-m263_iot-block_device-kvstore-v4.1.0.bin differ
diff --git a/drivers/storage/COMPONENT_NUSD.lib b/drivers/storage/COMPONENT_NUSD.lib
new file mode 100644
index 0000000..e880349
--- /dev/null
+++ b/drivers/storage/COMPONENT_NUSD.lib
@@ -0,0 +1 @@
+https://github.com/OpenNuvoton/NuMaker-mbed-SD-driver/#56406071a4468a8302c0717a4467a241d152ade2
diff --git a/mbed_app.json b/mbed_app.json
index f223de4..8d54ef6 100644
--- a/mbed_app.json
+++ b/mbed_app.json
@@ -134,6 +134,36 @@
             "sd.SPI_CLK"                                : "PC_7",
             "sd.SPI_CS"                                 : "PB_9"
         },
+        "NUMAKER_IOT_M263A": {
+            "target.network-default-interface-type"     : "WIFI",
+            "target.bootloader_img"                     : "bootloader/mbed-bootloader-m263_iot-block_device-kvstore-v4.1.0.bin",
+            "bootloader-size"                           : "(64*1024)",
+            "target.header_offset"                      : "0x12000",
+            "target.app_offset"                         : "0x12400",
+            "target.components_add"                     : ["NUSD"],
+            "nusd.provide-default-blockdevice"          : true,
+            "nusd.provide-kvstore-other-blockdevice"    : true,
+            "update-client.bootloader-details"          : "0x0",
+            "update-client.application-details"         : "0x12000",
+            "update-client.storage-address"             : "(1024*1024*64)",
+            "update-client.storage-size"                : "((MBED_ROM_START + MBED_ROM_SIZE - APPLICATION_ADDR) * MBED_CONF_UPDATE_CLIENT_STORAGE_LOCATIONS)",
+            "update-client.storage-locations"           : 1,
+            "mbed-cloud-client.update-storage"          : "ARM_UCP_FLASHIAP_BLOCKDEVICE",
+            "storage.storage_type"                      : "FILESYSTEM",
+            "storage_filesystem.filesystem"             : "LITTLE",
+            "storage_filesystem.blockdevice"            : "other",
+            "storage_filesystem.internal_base_address"  : "(MBED_ROM_START + MBED_BOOTLOADER_SIZE)",
+            "storage_filesystem.rbp_internal_size"      : "(2*4*1024)",
+            "storage_filesystem.external_base_address"  : "(0x0)",
+            "storage_filesystem.external_size"          : "(1024*1024*64)",
+            "esp8266.tx"                                : "PC_7",
+            "esp8266.rx"                                : "PC_6",
+            "esp8266.rts"                               : "PE_13",
+            "esp8266.cts"                               : "PC_8",
+            "esp8266.rst"                               : "PE_12",
+            "esp8266.provide-default"                   : true,
+            "target.macros_add"                         : ["MBEDTLS_USER_CONFIG_FILE=\"mbedTLSConfig_mbedOS.h\"", "ESP8266_SEND_TIMEOUT=8000"]
+        },
         "DISCO_L475VG_IOT01A": {
             "target.macros_add"                         : ["MBEDTLS_USER_CONFIG_FILE=\"mbedTLSConfig_mbedOS.h\""],
             "target.network-default-interface-type"     : "WIFI",