diff --git a/docs/ezcoo.md b/docs/ezcoo.md
index 5b5f585..f947a86 100644
--- a/docs/ezcoo.md
+++ b/docs/ezcoo.md
@@ -122,3 +122,45 @@ kvmd:
                 protocol: 2
                 device: /dev/ttyUSB0
 ```
+
+
+## Developer info
+* [The official protocol version 1 reference](ezcoo1.docx)
+* ??? example "Differences between protocols 1 and 2"
+    ```
+    ===============================================================================================================================
+    =********************************************************Systems HELP*********************************************************=
+    =-----------------------------------------------------------------------------------------------------------------------------=
+    =                        System Address = 00           F/W Version : 1.20                                                     =
+    =   Azz                           :  All Commands start by Prefix System Address zz, if [01-99]                               =
+    =-----------------------------------------------------------------------------------------------------------------------------=
+    =   EZH                           : Help                                                                                      =
+    =   EZSTA                         : Show Global System Status                                                                 =
+    =   EZS RST                       : Reset to Factory Defaults                                                                 =
+    =   EZS ADDR xx                   : Set System Address to xx {xx=[00~99](00=Single)}                                          =
+    =   EZS CAS EN/DIS                : Set Cascade Mode Enable/Disable                                                           =
+    =   EZS OUTx VS INy               : Set Output x To Input y{x=[0~2](0=ALL), y=[1~4]}                                          =
+    =   EZS IR SYS xx.yy              : Set IR Custom Code{xx=[00-FFH],yy=[00-FFH]}                                               =
+    =   EZS IR OUTx INy CODE zz       : Set IR Data Code{x=[1~2],y=[1~4],zz=[00-FFH]}                                             =
+    =   EZG ADDR                      : Get System Address                                                                        =
+    =   EZG STA                       : Get System System Status                                                                  =
+    =   EZG CAS                       : Get Cascade Mode Status                                                                   =
+    =   EZG OUTx VS                   : Get Output x Video Route{x=[0~2](0=ALL)}                                                  =
+    =   EZG IR SYS                    : Get IR Custom Code                                                                        =
+    =   EZG IR OUTx INy CODE          : Get IR Data Code{x=[1~2],y=[1~4]}                                                         =
+    =   EZS OUTx VIDEOy               : Set Output VIDEO Mode                                                                     =
+    =                                   {x=[1~2], y=[1~2](1=BYPASS,2=4K->2K)}                                                     =
+    =-----------------------------------------------------------------------------------------------------------------------------=
+    =Input Setup Commands:(Note:input number(x)=HDMI(x),x=1)                                                                      =
+    =   EZS INx EDID y                : Set Input x EDID{x=[0~4](0=ALL), y=[0~15]}                                                =
+    =                                   0:EDID_BYPASS         1:1080P_2CH_HDR          2:1080P_6CH_HDR        3:1080P_8CH_HDR     =
+    =                                   4:1080P_3D_2CH_HDR    5:1080P_3D_6CH_HDR   6:1080P_3D_8CH_HDR                             =
+    =                                   7:4K30HZ_3D_2CH_HDR  8:4K30HZ_3D_6CH_HDR  9:4K30HZ_3D_8CH_HDR                             =
+    =                                   10:4K60HzY420_3D_2CH_HDR  11:4K60HzY420_3D_6CH_HDR  12:4K60HzY420_3D_8CH_HDR              =
+    =                                   13:4K60HZ_3D_2CH_HDR  14:4K60HZ_3D_6CH_HDR  15:4K60HZ_3D_8CH_HDR                          =
+    =                                   16:H4K_DOLBY_VISION_ATMOS                                                                 =
+    =   EZG INx EDID                  : Get Input x EDID  Index{x=[0~4](0=ALL)}                                                   =
+    =-----------------------------------------------------------------------------------------------------------------------------=
+    =*****************************************************************************************************************************=
+    ===============================================================================================================================
+    ```
diff --git a/docs/ezcoo/ezcoo1.docx b/docs/ezcoo/ezcoo1.docx
new file mode 100644
index 0000000..a2e4c90
Binary files /dev/null and b/docs/ezcoo/ezcoo1.docx differ