diff --git a/adafruit_platformdetect/board.py b/adafruit_platformdetect/board.py
index 47c104b..16c3531 100644
--- a/adafruit_platformdetect/board.py
+++ b/adafruit_platformdetect/board.py
@@ -485,6 +485,8 @@ def _rk3566_id(self) -> Optional[str]:
             board = boards.LUBANCAT_ZERO
         if board_value and "LubanCat1" in board_value:
             board = boards.LUBANCAT1
+        if board_value and "Radxa CM3 IO" in board_value:
+            board = boards.RADXA_CM3
         return board
 
     def _rk3568_id(self) -> Optional[str]:
diff --git a/adafruit_platformdetect/constants/boards.py b/adafruit_platformdetect/constants/boards.py
index 52800a5..bba1522 100644
--- a/adafruit_platformdetect/constants/boards.py
+++ b/adafruit_platformdetect/constants/boards.py
@@ -163,6 +163,7 @@
 SOPINE = "SOPINE"
 
 RADXA_ZERO = "RADXA_ZERO"
+RADXA_CM3 = "RADXA_CM3"
 
 ROCK_PI_S = "ROCK_PI_S"
 ROCK_PI_4 = "ROCK_PI_4"
@@ -536,7 +537,15 @@
 # Pcduino baords
 _PCDUINO_DEV_IDS = (PCDUINO2, PCDUINO3)
 # RockPi boards and devices
-_ROCK_PI_IDS = (ROCK_PI_S, ROCK_PI_4, ROCK_PI_X, ROCK_PI_E, RADXA_ZERO, ROCK_PI_5)
+_ROCK_PI_IDS = (
+    ROCK_PI_S,
+    ROCK_PI_4,
+    ROCK_PI_X,
+    ROCK_PI_E,
+    RADXA_ZERO,
+    ROCK_PI_5,
+    RADXA_CM3,
+)
 
 # UDOO
 _UDOO_BOARD_IDS = {UDOO_BOLT_V8: ("SC40-2000-0000-C0|C",), UDOO_X86: ("dummy",)}