diff --git a/board/io3.c b/board/io3.c
index 0a4fc80..369714f 100644
--- a/board/io3.c
+++ b/board/io3.c
@@ -150,6 +150,13 @@ void io3_init(
     io3->ops_ctx = ops_ctx;
 }
 
+struct jvs_node *io3_to_jvs_node(struct io3 *io3)
+{
+    assert(io3 != NULL);
+
+    return &io3->jvs;
+}
+
 static void io3_transact(
         struct jvs_node *node,
         const void *bytes,
diff --git a/board/io3.h b/board/io3.h
index efe98d1..a094a2a 100644
--- a/board/io3.h
+++ b/board/io3.h
@@ -33,3 +33,5 @@ void io3_init(
         struct jvs_node *next,
         const struct io3_ops *ops,
         void *ops_ctx);
+
+struct jvs_node *io3_to_jvs_node(struct io3 *io3);