diff --git a/Makefile b/Makefile
index da4edc2..03064bd 100644
--- a/Makefile
+++ b/Makefile
@@ -274,7 +274,12 @@ CFLAGS += -Wno-cast-function-type
 # Defined Symbol (MACROS)
 CFLAGS += -D__HEAP_SIZE=0
 CFLAGS += -DCONFIG_GPIO_AS_PINRESET
-CFLAGS += -DCONFIG_NFCT_PINS_AS_GPIOS
+
+# Skip defining CONFIG_NFCT_PINS_AS_GPIOS if the device uses the NFCT.
+ifneq ($(USE_NFCT),yes)
+  CFLAGS += -DCONFIG_NFCT_PINS_AS_GPIOS
+endif
+
 CFLAGS += -DSOFTDEVICE_PRESENT
 CFLAGS += -DDFU_APP_DATA_RESERVED=7*4096
 
diff --git a/README.md b/README.md
index 0a86a9d..bb71ad5 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,8 @@ This is a CDC/DFU/UF2 bootloader for nRF52 boards.
 - [Adafruit ItsyBitsy nRF52840 Express](https://www.adafruit.com/product/4481)
 - Adafruit Metro nRF52840 Express
 - [Electronut Labs Papyr](https://docs.electronut.in/papyr/)
-- MakerDiary MDK nRF52840 USB Dongle
+- [MakerDiary MDK nRF52840 USB Dongle](https://makerdiary.com/products/nrf52840-mdk-usb-dongle)
+- [MakerDiary nRF52840 M.2 Module](https://makerdiary.com/products/nrf52840-m2-module)
 - [Nordic nRF52840DK PCA10056](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK)
 - [Nordic nRF52840DK PCA10059 ("Dongle")](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-Dongle)
 - Particle Argon
diff --git a/src/boards/nrf52840_m2/board.h b/src/boards/nrf52840_m2/board.h
new file mode 100644
index 0000000..57265ab
--- /dev/null
+++ b/src/boards/nrf52840_m2/board.h
@@ -0,0 +1,72 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Yihui Xiong for Makerdiary
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef _MAKERDIARY_NRF52840_M2_H_
+#define _MAKERDIARY_NRF52840_M2_H_
+
+#define _PINNUM(port, pin)    ((port)*32 + (pin))
+
+/*------------------------------------------------------------------*/
+/* LED
+ *------------------------------------------------------------------*/
+#define LEDS_NUMBER           1
+#define LED_PRIMARY_PIN       _PINNUM(0, 30)  // Red
+#define LED_DOCK_GREEN_PIN    _PINNUM(1, 7)   // Only available on the M.2 Dock
+#define LED_STATE_ON          0
+
+#define LED_RGB_RED_PIN       _PINNUM(0, 30)
+#define LED_RGB_GREEN_PIN     _PINNUM(0, 29)
+#define LED_RGB_BLUE_PIN      _PINNUM(0, 31)
+#define BOARD_RGB_BRIGHTNESS  0x404040
+/*------------------------------------------------------------------*/
+/* BUTTON
+ *------------------------------------------------------------------*/
+#define BUTTONS_NUMBER        2
+#define BUTTON_1              _PINNUM(0, 19)
+#define BUTTON_2              _PINNUM(1, 7)
+#define BUTTON_PULL           NRF_GPIO_PIN_PULLUP
+
+//--------------------------------------------------------------------+
+// BLE OTA
+//--------------------------------------------------------------------+
+#define BLEDIS_MANUFACTURER   "Makerdiary"
+#define BLEDIS_MODEL          "nRF52840 M.2"
+
+//--------------------------------------------------------------------+
+// USB
+//--------------------------------------------------------------------+
+#define USB_DESC_VID            0x2886
+#define USB_DESC_UF2_PID        0xF00F
+#define USB_DESC_CDC_ONLY_PID   0xF00F
+
+//--------------------------------------------------------------------+
+// UF2
+//--------------------------------------------------------------------+
+#define UF2_PRODUCT_NAME        "MakerDiary nRF52840 M.2 Module"
+#define UF2_VOLUME_LABEL        "nRF52840M2"
+#define UF2_BOARD_ID            "nRF52840M2"
+#define UF2_INDEX_URL           "https://wiki.makerdiary.com/nrf52840-m2"
+
+
+#endif /* _MAKERDIARY_NRF52840_M2_H_ */
diff --git a/src/boards/nrf52840_m2/board.mk b/src/boards/nrf52840_m2/board.mk
new file mode 100644
index 0000000..bea74cc
--- /dev/null
+++ b/src/boards/nrf52840_m2/board.mk
@@ -0,0 +1,2 @@
+MCU_SUB_VARIANT = nrf52840
+USE_NFCT = yes
diff --git a/src/boards/nrf52840_m2/pinconfig.c b/src/boards/nrf52840_m2/pinconfig.c
new file mode 100644
index 0000000..a983e4a
--- /dev/null
+++ b/src/boards/nrf52840_m2/pinconfig.c
@@ -0,0 +1,19 @@
+#include "boards.h"
+#include "uf2/configkeys.h"
+
+__attribute__((used, section(".bootloaderConfig")))
+const uint32_t bootloaderConfig[] =
+{
+  /* CF2 START */
+  CFG_MAGIC0, CFG_MAGIC1,                       // magic
+  5, 100,                                       // used entries, total entries
+
+  204, 0x100000,                                // FLASH_BYTES = 0x100000
+  205, 0x40000,                                 // RAM_BYTES = 0x40000
+  208, (USB_DESC_VID << 16) | USB_DESC_UF2_PID, // BOOTLOADER_BOARD_ID = USB VID+PID, used for verification when updating bootloader via uf2
+  209, 0xada52840,                              // UF2_FAMILY = 0xada52840
+  210, 0x20,                                    // PINS_PORT_SIZE = PA_32
+
+  0, 0, 0, 0, 0, 0, 0, 0
+  /* CF2 END */
+};