diff --git a/boards/pocketbeagle/original/ch02.rst b/boards/pocketbeagle/original/ch02.rst
index 6a8db253b8ba104554daecc92b4ec78ae5d99d93..89e6b13c549a2af30c132a9d62281440a6517381 100644
--- a/boards/pocketbeagle/original/ch02.rst
+++ b/boards/pocketbeagle/original/ch02.rst
@@ -86,3 +86,18 @@ Known issues in rev A2:
 |                                  | sues/4 <https://github.com/beagl |
 |                                  | eboard/pocketbeagle/issues/4>`__ |
 +----------------------------------+----------------------------------+
+
+Rev A2B
+^^^^^^^^^^^^
+
+Because there are 2 TI parts which have long LT, we propose to have the following changes:
+
+    Use ESD discrete devices instead of integrated TVS TI: TPD4S012DRYR.
+    Change Logic IC TI: SN74LVC1G07DCKR to Nexperia: 74LVC1G07GV,125.
+
+Related documents put on google drive：
+
+https://drive.google.com/drive/folders/14UVNA0i3mATkLZFYGYaGFKt3y6VxfSd-?usp=sharing
+
+
+