diff --git a/docs/Module_BG_4-in-1.md b/docs/Module_BG_4-in-1.md
index a2b47e7..953f844 100644
--- a/docs/Module_BG_4-in-1.md
+++ b/docs/Module_BG_4-in-1.md
@@ -43,7 +43,8 @@ V2b
 
 <img src="images/V2b_Serial_Enable.jpeg" width="220" height="340" /> 
 
-V2c
+V2c (also called 1.2)
+This revision has a 1.2 printed on the board and replaces the 5V linear regulator with a swichting regulator. 
 
 <img src="images/V2c_Serial_Enable.jpeg" width="220" height="340" />