diff --git a/adafruit_platformdetect/board.py b/adafruit_platformdetect/board.py
index 70c49a3..5a96778 100644
--- a/adafruit_platformdetect/board.py
+++ b/adafruit_platformdetect/board.py
@@ -655,6 +655,8 @@ class Board:
             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 e0a827a..5046f4a 100644
--- a/adafruit_platformdetect/constants/boards.py
+++ b/adafruit_platformdetect/constants/boards.py
@@ -210,6 +210,7 @@ RADXA_ZERO3 = "RADXA_ZERO3"
 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"
@@ -609,6 +610,7 @@ _ROCK_PI_IDS = (
     ROCK_PI_5C,
     RADXA_CM3,
     ROCK_PI_3A,
+    ROCK_3B,
     ROCK_PI_3C,
 )