diff --git a/docs/en/unit/pahub.md b/docs/en/unit/pahub.md
index cf33dcc5..eada7f5a 100644
--- a/docs/en/unit/pahub.md
+++ b/docs/en/unit/pahub.md
@@ -5,7 +5,7 @@
-:memo:**[Description](#Description)** :octocat:**[Example](#Example)** 🛒**[Purchase](https://www.aliexpress.com/store/productM5Stack-Official-NeoPixel-RGB-LEDs-Cable-SK6812-with-GROVE-Port-2m-1m-50cm-20cm-10cm/3226069_32950831315.html?spm=a2g1x.12024536.productList_5885013.pic_0)** :clapper:**[Related Video](#Related-Video)**
+:memo:**[Description](#Description)** :electric_plug:**[Schematic](#Schematic)** 🛒**[Purchase](https://www.aliexpress.com/store/productM5Stack-Official-NeoPixel-RGB-LEDs-Cable-SK6812-with-GROVE-Port-2m-1m-50cm-20cm-10cm/3226069_32950831315.html?spm=a2g1x.12024536.productList_5885013.pic_0)** :octocat:**[Code](#Code)**
## Description
@@ -42,7 +42,7 @@ The I2C address of this unit is 0x77 (changable by resistors).
- Datasheet - **[TCA9548A](http://www.ti.com/lit/ds/symlink/tca9548a.pdf)**
-## Driver Protocol
+## Code
- protovol type - I2C
- address - 0x77
diff --git a/docs/en/unit/pbhub.md b/docs/en/unit/pbhub.md
index eab39924..61c12aa7 100644
--- a/docs/en/unit/pbhub.md
+++ b/docs/en/unit/pbhub.md
@@ -5,7 +5,7 @@
-:memo:**[Description](#Description)** :bulb:**[Assembly](#Assembly)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-Rubber-Band-Powered-Butterfly-Launcher-with-SERVO-control-and-GROVE-Cable-Adapter-Children-s/3226069_32956965036.html?spm=2114.12010615.8148356.2.486b2682Z5xogF)** :clapper:**[Related Video](#Related-Video)**
+:memo:**[Description](#Description)** :electric_plug:**[Schematic](#Schematic)** 🛒**[Purchase](https://www.aliexpress.com/store/product/M5Stack-Official-Rubber-Band-Powered-Butterfly-Launcher-with-SERVO-control-and-GROVE-Cable-Adapter-Children-s/3226069_32956965036.html?spm=2114.12010615.8148356.2.486b2682Z5xogF)** :octocat:**[Code](#Code)**
## DESCRIPTION
@@ -14,7 +14,6 @@ It is build with a MEGA328, with a simple driver firmware inside.
-
*Notice: Please pay attention to the channel order while programing*
@@ -26,12 +25,6 @@ It is build with a MEGA328, with a simple driver firmware inside.
- Two Lego-compatible holes
- 1-To-6
-## Product Features
-
-- Single-Bus GROVE PORTB Expander
-- Two Lego-compatible holes
-- Nested allowed
-- 1-To-6
### Kit includes
- 1x PbHUB Unit
@@ -43,7 +36,7 @@ It is build with a MEGA328, with a simple driver firmware inside.
-## Driver Protocol
+## Code
- Driver firmware - **[PbHUB](https://github.com/m5stack/PbHUB/tree/master/PortB_HUB/Firmware)**
@@ -95,8 +88,4 @@ It is build with a MEGA328, with a simple driver firmware inside.
- Test code - **[PbHUB](https://github.com/m5stack/PbHUB/tree/master/PortB_HUB)**
-## Schematic
-
-
-