diff --git a/docs/assets/img/product_pics/unit/pahub/pahub_p1.jpg b/docs/assets/img/product_pics/unit/pahub/pahub_p1.jpg
new file mode 100644
index 00000000..30a2d594
Binary files /dev/null and b/docs/assets/img/product_pics/unit/pahub/pahub_p1.jpg differ
diff --git a/docs/assets/img/product_pics/unit/pahub/pahub_p2.jpg b/docs/assets/img/product_pics/unit/pahub/pahub_p2.jpg
new file mode 100644
index 00000000..f8d9a3e5
Binary files /dev/null and b/docs/assets/img/product_pics/unit/pahub/pahub_p2.jpg differ
diff --git a/docs/assets/img/product_pics/unit/pahub/pahub_p3.jpg b/docs/assets/img/product_pics/unit/pahub/pahub_p3.jpg
new file mode 100644
index 00000000..a36052d4
Binary files /dev/null and b/docs/assets/img/product_pics/unit/pahub/pahub_p3.jpg differ
diff --git a/docs/assets/img/product_pics/unit/pahub/sch_pahub.png b/docs/assets/img/product_pics/unit/pahub/sch_pahub.png
new file mode 100644
index 00000000..1d75e769
Binary files /dev/null and b/docs/assets/img/product_pics/unit/pahub/sch_pahub.png differ
diff --git a/docs/assets/img/product_pics/unit/pbhub/pbhub_p1.jpg b/docs/assets/img/product_pics/unit/pbhub/pbhub_p1.jpg
new file mode 100644
index 00000000..13f0c3bb
Binary files /dev/null and b/docs/assets/img/product_pics/unit/pbhub/pbhub_p1.jpg differ
diff --git a/docs/assets/img/product_pics/unit/pbhub/pbhub_p2.png b/docs/assets/img/product_pics/unit/pbhub/pbhub_p2.png
new file mode 100644
index 00000000..8b2c835b
Binary files /dev/null and b/docs/assets/img/product_pics/unit/pbhub/pbhub_p2.png differ
diff --git a/docs/assets/img/product_pics/unit/pbhub/pbhub_p3.jpg b/docs/assets/img/product_pics/unit/pbhub/pbhub_p3.jpg
new file mode 100644
index 00000000..6deb7e34
Binary files /dev/null and b/docs/assets/img/product_pics/unit/pbhub/pbhub_p3.jpg differ
diff --git a/docs/assets/img/product_pics/unit/pbhub/pbhub_sch.jpg b/docs/assets/img/product_pics/unit/pbhub/pbhub_sch.jpg
new file mode 100644
index 00000000..e32958c0
Binary files /dev/null and b/docs/assets/img/product_pics/unit/pbhub/pbhub_sch.jpg differ
diff --git a/docs/en/unit/pahub.md b/docs/en/unit/pahub.md
new file mode 100644
index 00000000..821608d5
--- /dev/null
+++ b/docs/en/unit/pahub.md
@@ -0,0 +1,54 @@
+# Unit PaHUB {docsify-ignore-all}
+
+
+
+
+
+: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)**
+
+## Description
+
+**PaHUB**, is a expander for I2C GROVE PORTA(red port on M5Core). 1-to-6. If you want connect mutiple I2C slave devices and some of them may sharing the same address, this unit can resolve I2C address conflicts.
+
+At the Unit PaHUB's heart is an **TCA9548A** produced by TI. The TCA9548A device has eight bidirectional translating switches that can be controlled through the I2C bus. The SCL/SDA upstream pair fans out to downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can beselected, determined by the contents of the
+programmable control register.
+
+Technically this Unit allows mutiple levels of nesting, for example you can wire PaHUBs to the root PaHUB to get more seats for your I2C slave devices, if you have 7 of them you can have up to 36 I2C GROVE ports, which makes it easier to get your project more organized.
+
+The I2C address of this unit is 0x77 (changable by resistors).
+
+*Notice: Please pay attention to the channel order while programing*
+
+
+
+## Product Features
+
+- I2C GROVE PORTA Expander
+- Two Lego-compatible holes
+- Nested allowed
+- 1-To-6
+
+## Kit includes
+
+- 1x PaHUB Unit
+- 1x Grove Cable
+
+
+## DOCUMENTS
+
+
+- Datasheet - **[TCA9548A](http://www.ti.com/lit/ds/symlink/tca9548a.pdf)**
+
+
+
+## Schematic
+
+
+
+## Driver Protocol
+
+- Driver firmware -
+
+- Test code -
+- protovol type - I2C
+- address - 0x77
\ No newline at end of file
diff --git a/docs/en/unit/pbhub.md b/docs/en/unit/pbhub.md
new file mode 100644
index 00000000..1a33caa4
--- /dev/null
+++ b/docs/en/unit/pbhub.md
@@ -0,0 +1,74 @@
+# Unit PbHUB {docsify-ignore-all}
+
+
+
+***
+
+: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)**
+
+## DESCRIPTION
+
+**PbHUB**, is a expander for singel-bus GROVE PORTB(Black port on M5GO Base). 1-to-6. PortB can be used as GPIO and analog in two data lines connected to GPIO36 and GPIO26 on ESP32. Same as PaHUB, it provides a solution for mutiple device control by PORTB. With PbHUB each of the IO can be configurated to input, output and analog in as you like. Unfortunatly this Unit is unnested.
+It is build with a MEGA328, with a simple driver firmware inside.
+
+
+The I2C address of this unit is 0x40(Changable by resistors).
+
+*Notice: Please pay attention to the channel order while programing*
+
+
+
+### Product Features
+
+- Single-Bus GROVE PORTB Expander
+- Two Lego-compatible holes
+- 1-To-6
+
+### Kit includes
+
+- 1x PbHUB Unit
+- 1x Grove Cable
+
+
+## Schematic
+
+
+
+## Driver Protocol
+
+- Driver firmware - **[PbHUB](https://github.com/m5stack/PbHUB/tree/master/PortB_HUB/Firmware)**
+
+- Test code - **[PbHUB](https://github.com/m5stack/PbHUB/tree/master/PortB_HUB)**
+- protovol type - I2C
+- address - 0x61
+- Set oneLED Color* : LED address(2bytes) + RGB value(3bytes)
+- Set moreLED Color* : LED start address(2bytes) + LED end address(2bytes) + RGB value(3bytes)
+-
+
+
+ | state | IO0 Digital Write | IO1 Digital Write | IO0 Analog Write | IO1 Analog Write | IO0 Digital Read | IO1 Digital Read | IO0 Analog Read | reserve | Set Neopixle Num | Set oneLED Color* | Set moreLED Color* | Set Brightness |
+
+
+ | r/w | w | w | w | w | r | r | r | r | w | w | w | w |
+
+ | data length (Byte) | 1 | 1 | 1 | 1 | 1 | 1 | 2 | / | 2 | 5 | 7 | 1 |
+
+
+ | ch0 cmd | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 4A | 4B |
+
+
+ | ch1 cmd | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 5A | 5B |
+
+
+ | ch2 cmd | 60 | 61 | 62 | 63 | 64 | 65 | 46 | 67 | 68 | 69 | 6A | 6B |
+
+
+ | ch3 cmd | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 7A | 7B |
+
+
+ | ch4 cmd | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 8A | 8B |
+
+
+ | ch5 cmd | A0 | A1 | A2 | A3 | A4 | A5 | A6 | A7 | A8 | A9 | AA | AB |
+
+
\ No newline at end of file