diff --git a/adafruit_platformdetect/board.py b/adafruit_platformdetect/board.py
index 5c1ade88..9b8ee427 100644
--- a/adafruit_platformdetect/board.py
+++ b/adafruit_platformdetect/board.py
@@ -645,6 +645,8 @@ def _rk3568_id(self) -> Optional[str]:
             board = boards.LUBANCAT2
         if board_value and "ROCK3 Model A" in board_value:
             board = boards.ROCK_PI_3A
+        if board_value and "ROCK 3 Model B" in board_value:
+            board = boards.ROCK_3B
         if board_value and "Hardkernel ODROID-M1" in board_value:
             board = boards.ODROID_M1
         return board
diff --git a/adafruit_platformdetect/constants/boards.py b/adafruit_platformdetect/constants/boards.py
index 392b4100..4b5c94f4 100644
--- a/adafruit_platformdetect/constants/boards.py
+++ b/adafruit_platformdetect/constants/boards.py
@@ -208,6 +208,7 @@
 RADXA_CM3 = "RADXA_CM3"
 
 ROCK_PI_3A = "ROCK_PI_3A"
+ROCK_3B = "ROCK_3B"
 ROCK_PI_3C = "ROCK_PI_3C"
 ROCK_PI_S = "ROCK_PI_S"
 ROCK_PI_4 = "ROCK_PI_4"
@@ -601,6 +602,7 @@
     ROCK_PI_5C,
     RADXA_CM3,
     ROCK_PI_3A,
+    ROCK_3B,
     ROCK_PI_3C,
 )