diff --git a/C64_1351_Mouse/README.md b/C64_1351_Mouse/README.md
index 68a1bf2..577631c 100644
--- a/C64_1351_Mouse/README.md
+++ b/C64_1351_Mouse/README.md
@@ -26,6 +26,7 @@ typedef MAX3421e<P18, P19> MAX3421E;
 - 1 (UP, right mouse button) -> 6  (blue)
 - 8 GND -> GND  (black)
 - 7 5V -> 5V (red)
+(2 down (green), 3 (paddle 1 btn) (left) grey -> 7, 4 (paddle 2 btn) (right) purple -> 8)
 
 #### USB Host Shield (3.3V) -> Arduino
 - SS -> A0 (Arduino Pro Micro), A0 (Arduino Uno) (check UsbCore.h) (3.3V!)