diff --git a/adafruit_platformdetect/board.py b/adafruit_platformdetect/board.py
index dfdff38..0603388 100644
--- a/adafruit_platformdetect/board.py
+++ b/adafruit_platformdetect/board.py
@@ -561,6 +561,8 @@ def _rk3566_id(self) -> Optional[str]:
             board = boards.RADXA_CM3
         if board_value and "Rockchip RK3566 OPi 3B" in board_value:
             board = boards.ORANGE_PI_3B
+        if board_value and "Hardkernel ODROID-M1S" in board_value:
+            board = boards.ODROID_M1S
         return board
 
     def _rk3568_id(self) -> Optional[str]:
diff --git a/adafruit_platformdetect/constants/boards.py b/adafruit_platformdetect/constants/boards.py
index fd8c3bf..90255d5 100644
--- a/adafruit_platformdetect/constants/boards.py
+++ b/adafruit_platformdetect/constants/boards.py
@@ -147,6 +147,7 @@
 ODROID_N2 = "ODROID_N2"
 ODROID_XU4 = "ODROID_XU4"
 ODROID_M1 = "ODROID_M1"
+ODROID_M1S = "ODROID_M1S"
 
 FTDI_FT232H = "FTDI_FT232H"
 FTDI_FT2232H = "FTDI_FT2232H"
@@ -395,6 +396,7 @@
     ODROID_N2,
     ODROID_XU4,
     ODROID_M1,
+    ODROID_M1S,
 )
 
 _ODROID_MINI_PC_IDS = (ODROID_H3,)