diff --git a/expansionadding.md b/expansionadding.md
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--- a/expansionadding.md
+++ b/expansionadding.md
@@ -1,3 +1,17 @@
 # Expanding your boards
 
+Each of the boards has an area on the right hand side for adding an expansion board.
+
+## 640 board
+
+![640 Motors](/images/640-expansionarea.png)
+
+## ESCAPE board
+
+![ESCAPE Expansion](/images/escape-expansionarea.png)
+
+## SOAR board
+
+![SOAR expansion](/images/soarexpansion.png)
+
 ## Adding an expansion board