diff --git a/docs/helios64/hardware.md b/docs/helios64/hardware.md
new file mode 100644
index 0000000..5657c7b
--- /dev/null
+++ b/docs/helios64/hardware.md
@@ -0,0 +1,7 @@
+## Block Diagram
+
+### Helios64 Board
+![!Block Diagram](/helios64/img/hardware/helios64_block_diagram.png)
+
+### RK3399(K) System-On-Chip
+![!Block Diagram](/helios64/img/hardware/rk3399_block_diagram.png)
diff --git a/docs/helios64/img/hardware/helios64_block_diagram.png b/docs/helios64/img/hardware/helios64_block_diagram.png
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diff --git a/docs/helios64/img/hardware/rk3399_block_diagram.png b/docs/helios64/img/hardware/rk3399_block_diagram.png
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diff --git a/docs/helios64/intro.md b/docs/helios64/intro.md
index f9d8c1a..f1d9091 100644
--- a/docs/helios64/intro.md
+++ b/docs/helios64/intro.md
@@ -36,11 +36,11 @@ Helios64 is our latest design for the ultimate ARM powered NAS. Compared to the
 |**External Interfaces**||
 |Multi-Gigabit LAN Port (2.5Gbe)|1|
 |Gigabit LAN Port (1Gbe)|1|
-|USB Type-C|1<br>Supports following:<br>- DP Mode<br>- DAS Mode<br>- Host Mode<br>- Serial Console
+|USB Type-C|1<br>Supports following:<br>- DisplayPort Mode<br>- DAS Mode<br>- Host Mode<br>- Serial Console
 |USB 3.0|3|
 |microSD (SDIO 3.0)|1|
 |**Developer Interfaces**||
-|GPIO|20|
+|GPIO|16|
 |I2C|1|
 |UEXT|1|
 |**Others**||
@@ -49,6 +49,7 @@ Helios64 is our latest design for the ultimate ARM powered NAS. Compared to the
 |Bult-in UPS|yes|
 |RTC Battery|yes|
 |DC input|Dual 12V inputs|
+|Front Panel Extension|yes|
 
 ![Helios64 Top View](/helios64/img/intro/helios64-top-view.jpg)
 
@@ -60,7 +61,7 @@ Helios64 is our latest design for the ultimate ARM powered NAS. Compared to the
 |------------|-----------|
 |Board Dimension|120mm x 120mm|
 |Board Weight|180gr (without heatsink)|
-|Case Dimention (H x W x D)|H 134mm x W 222mm x D 250mm|
+|Case Dimension (H x W x D)|H 134mm x W 222mm x D 250mm|
 |Case Weight|3.5Kg (without HDD)|
 |Case Material|Aluminum + Metal|
 
diff --git a/mkdocs.yml b/mkdocs.yml
index 4c240d6..a4ad411 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -69,6 +69,8 @@ nav:
 - Welcome: 'index.md'
 - Helios64:
   - Introduction: 'helios64/intro.md'
+  - Hardware:
+    - Overview : 'helios64/hardware.md'
 - Helios4:
   - Introduction: 'helios4/intro.md'
   - Kit Assembly: 'helios4/kit.md'