diff --git a/docs/en/product_documents.md b/docs/en/product_documents.md
index c834fd3b..ca860a9a 100644
--- a/docs/en/product_documents.md
+++ b/docs/en/product_documents.md
@@ -42,7 +42,7 @@
 
 |       |   |   |
 | :------------------:  |:------------------:| :--------------------:|
-| [LEGO-CABLE](en/product_documents/cables/accessory_lego_cable)      | [FRAME](en/product_documents/accessory_frame)  | /   |
+| [LEGO-CABLE](en/product_documents/accessories/cables/accessory_lego_cable)      | [FRAME](en/product_documents/accessories/frame)  | /   |
 
 <img src='assets/img/product_pics/3.jpg'> <img src='assets/img/product_pics/unit.png'>
 
@@ -59,8 +59,8 @@
 | [Dual-BUTTON](/en/product_documents/units/unit_dual_button)                   | /                         | /                 |
 | [JOYSTICK](/en/product_documents/units/unit_joystick)                   | /                         | /                 |
 | [THERMAL](/en/product_documents/units/unit_thermal)                   | /                         | /                 |
-| [ADC](/en/product_documents/units/unit_ADC)                   | /                         | /                 |
-| [DAC](/en/product_documents/units/unit_DAC)                   | /                         | /                 |
+| [ADC](/en/product_documents/units/unit_adc)                   | /                         | /                 |
+| [DAC](/en/product_documents/units/unit_dac)                   | /                         | /                 |
 | [Color Sensor](/en/product_documents/units/unit_color_sensor)                   | /                         | /                 |
 | [ToF](/en/product_documents/units/unit_tof)                   | /                         | /                 |
 | [ESP32Cam](/en/product_documents/units/unit_esp32cam)                   | /                         | /                 |
diff --git a/docs/en/product_documents/accessorries/cables/accessory_lego_cable.md b/docs/en/product_documents/accessories/cables/accessory_lego_cable.md
similarity index 100%
rename from docs/en/product_documents/accessorries/cables/accessory_lego_cable.md
rename to docs/en/product_documents/accessories/cables/accessory_lego_cable.md
diff --git a/docs/en/product_documents/accessorries/frame.md b/docs/en/product_documents/accessories/frame.md
similarity index 100%
rename from docs/en/product_documents/accessorries/frame.md
rename to docs/en/product_documents/accessories/frame.md
diff --git a/docs/en/product_documents/accessories/headers_socket.md b/docs/en/product_documents/accessories/headers_socket.md
new file mode 100644
index 00000000..4436886e
--- /dev/null
+++ b/docs/en/product_documents/accessories/headers_socket.md
@@ -0,0 +1,3 @@
+# Headers Socket
+
+## (coming soom...)
diff --git a/docs/en/product_documents/accessorries/headers_socket.md b/docs/en/product_documents/accessorries/headers_socket.md
deleted file mode 100644
index cc8c1d69..00000000
--- a/docs/en/product_documents/accessorries/headers_socket.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# Headers Socket
-
-## DESCRIPTION
diff --git a/docs/ja/product_documents.md b/docs/ja/product_documents.md
index 52c0d5db..88cbaaec 100644
--- a/docs/ja/product_documents.md
+++ b/docs/ja/product_documents.md
@@ -63,8 +63,8 @@
 | [Dual BUTTON](ja/product_documents/units/unit_dual_button)   | / | / |
 | [JOYSTICK](ja/product_documents/units/unit_joystick)         | / | / |
 | [THERMAL](ja/product_documents/units/unit_thermal)           | / | / |
-| [ADC](ja/product_documents/units/unit_ADC)                   | / | / |
-| [DAC](ja/product_documents/units/unit_DAC)                   | / | / |
+| [ADC](ja/product_documents/units/unit_adc)                   | / | / |
+| [DAC](ja/product_documents/units/unit_dac)                   | / | / |
 | [COLOR SENSOR](ja/product_documents/units/unit_color_sensor) | / | / |
 | [ToF](ja/product_documents/units/unit_tof)                   | / | / |
 | [ESP32Cam](ja/product_documents/units/unit_esp32cam)         | / | / |
diff --git a/docs/zh_CN/product_documents.md b/docs/zh_CN/product_documents.md
index 1378a843..4fc7739e 100644
--- a/docs/zh_CN/product_documents.md
+++ b/docs/zh_CN/product_documents.md
@@ -41,7 +41,7 @@
 
 |       |   |   |
 | :------------------:  |:------------------:| :--------------------:|
-| [LEGO-CABLE](zh_CN/product_documents/cables/accessory_lego_cable)      | [FRAME](zh_CN/product_documents/accessory_frame)  | /   |
+| [LEGO-CABLE](zh_CN/product_documents/accessories/cables/accessory_lego_cable)      | [FRAME](zh_CN/product_documents/accessories/frame)  | /   |
 
 
 <img src='assets/img/product_pics/3.jpg'> <img src='assets/img/product_pics/unit.png'>
@@ -59,8 +59,8 @@
 | [Dual-BUTTON](zh_CN/product_documents/units/unit_dual_button)                   | /                         | /                 |
 | [JOYSTICK](zh_CN/product_documents/units/unit_joystick)                   | /                         | /                 |
 | [THERMAL](zh_CN/product_documents/units/unit_thermal)                   | /                         | /                 |
-| [ADC](zh_CN/product_documents/units/unit_ADC)                   | /                         | /                 |
-| [DAC](zh_CN/product_documents/units/unit_DAC)                   | /                         | /                 |
+| [ADC](zh_CN/product_documents/units/unit_adc)                   | /                         | /                 |
+| [DAC](zh_CN/product_documents/units/unit_dac)                   | /                         | /                 |
 | [Color Sensor](zh_CN/product_documents/units/unit_color_sensor)                   | /                         | /                 |
 | [ToF](zh_CN/product_documents/units/unit_tof)                   | /                         | /                 |
 | [NCIR](zh_CN/product_documents/units/unit_ncir)                           | /                         | /                 |
diff --git a/docs/zh_CN/product_documents/accessories/cables/accessory_lego_cable.md b/docs/zh_CN/product_documents/accessories/cables/accessory_lego_cable.md
new file mode 100644
index 00000000..a8c8ee4b
--- /dev/null
+++ b/docs/zh_CN/product_documents/accessories/cables/accessory_lego_cable.md
@@ -0,0 +1,3 @@
+# LEGO Cable
+
+## (敬请期待...)
\ No newline at end of file
diff --git a/docs/zh_CN/product_documents/accessories/frame.md b/docs/zh_CN/product_documents/accessories/frame.md
new file mode 100644
index 00000000..228e57db
--- /dev/null
+++ b/docs/zh_CN/product_documents/accessories/frame.md
@@ -0,0 +1,3 @@
+# Frame - 5x5的M5外框
+
+## (敬请期待...)
\ No newline at end of file
diff --git a/docs/zh_CN/product_documents/accessories/headers_socket.md b/docs/zh_CN/product_documents/accessories/headers_socket.md
new file mode 100644
index 00000000..aec4acf4
--- /dev/null
+++ b/docs/zh_CN/product_documents/accessories/headers_socket.md
@@ -0,0 +1,4 @@
+# Headers Socket
+
+## (敬请期待...)
+
diff --git a/docs/zh_CN/product_documents/accessorries/cables/accessory_lego_cable.md b/docs/zh_CN/product_documents/accessorries/cables/accessory_lego_cable.md
deleted file mode 100644
index 25f333b3..00000000
--- a/docs/zh_CN/product_documents/accessorries/cables/accessory_lego_cable.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# LEGO Cable
-
-## (coming soom...)
\ No newline at end of file
diff --git a/docs/zh_CN/product_documents/accessorries/frame.md b/docs/zh_CN/product_documents/accessorries/frame.md
deleted file mode 100644
index 1b12b531..00000000
--- a/docs/zh_CN/product_documents/accessorries/frame.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# Frame
-
-## (coming soom...)
\ No newline at end of file
diff --git a/docs/zh_CN/product_documents/accessorries/headers_socket.md b/docs/zh_CN/product_documents/accessorries/headers_socket.md
deleted file mode 100644
index cc8c1d69..00000000
--- a/docs/zh_CN/product_documents/accessorries/headers_socket.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# Headers Socket
-
-## DESCRIPTION