diff --git a/latest/CAD/README.md b/latest/CAD/README.md
index b1d5418..2861848 100644
--- a/latest/CAD/README.md
+++ b/latest/CAD/README.md
@@ -4,3 +4,11 @@ This directory contains Eagle CAD files as well as schematic PDFs and Gerber exp
 
 The board stackup is good enough for either OSH Park 4-layer, or JLCPCB 4-layer with controlled impedance (JLC2313). 
 
+### Latest Board
+
+Revision 6.2.0 is latest and the directory also contains a reference design for a breakout to help with development and debugging. The breakout
+features a CH330N USB-to-UART adapter IC as well as a TX "on/off" switch so you can get some ideas about how to interface to the unit from your own system.
+
+
+
+