diff --git a/640.md b/640.md
index 7b4682f..824fda5 100644
--- a/640.md
+++ b/640.md
@@ -6,10 +6,13 @@ The 640 board is used to drive up to 6 DC motors and 2 Servo motors.
 
 ![640](/images/640-450.png)
 
-Welcome to the 640 board - this guide will describe all the features of the 640 board and show you how to control up to 6 motors or 3 stepper motors very simply.
+Welcome to the 640 board - this guide will describe all the features of the 640 board and show you how to control up to 6 motors or 3 stepper motors and 2 servos very simply.
 
 ## Board layout
 
+##### CPPM / PPM-SUM
+
+![640 CPPM](/images/640-cppm.png)
 
 
 ## Setup
diff --git a/images/640-cppm.png b/images/640-cppm.png
new file mode 100644
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Binary files /dev/null and b/images/640-cppm.png differ