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-rw-r--r--host/docs/gpio_api.dox14
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diff --git a/host/docs/gpio_api.dox b/host/docs/gpio_api.dox
index 0337f7b08..54b130da6 100644
--- a/host/docs/gpio_api.dox
+++ b/host/docs/gpio_api.dox
@@ -58,6 +58,20 @@ The +3.3V is for ESD clamping purposes only and not designed to deliver high cur
- Pin 9: 0V
- Pin 10: Data[2]
+\subsection e320_gpio_conn E320 External GPIO connector
+
+### Front Panel GPIO Connections
+
+| GPIO | Mini HDMI (Type C) | HDMI (Type A) |
+|---------|----------------------|-----------------|
+| Data[0] | Data 0+ - Pin 8 | Pin 7 |
+| Data[1] | Data 0- - Pin 9 | Pin 9 |
+| Data[2] | Clock 0+ - Pin 11 | Pin 10 |
+| Data[3] | Clock 0- - Pin 12 | Pin 12 |
+| Data[4] | CEC - Pin 14 | Pin 13 |
+| Data[5] | SCL - Pin 15 | Pin 15 |
+| Data[6] | SDA - Pin 16 | Pin 16 |
+| Data[7] | Utility - Pin 17 | Pin 14 |
\subsection xgpio_fpanel_atr Explaining ATR