diff --git a/doc/source/Ohmpi_V2_00/V2_00_step_04.rst b/doc/source/Ohmpi_V2_00/V2_00_step_04.rst
index 1c9fe0def7258a7a68e55be683e78d35f023a522..8ae9cd5acb3586ea5dd69c4702ac6077ec883723 100644
--- a/doc/source/Ohmpi_V2_00/V2_00_step_04.rst
+++ b/doc/source/Ohmpi_V2_00/V2_00_step_04.rst
@@ -17,11 +17,55 @@
 
    +--------+------------------------------------------------------------+
    |        |   .. image:: step_n_4/step_4_2.jpg                         |
-   |      1 +------------------------------------------------------------+
+   |      2 +------------------------------------------------------------+
    |        |Crimp the ribbon cable on the corresponding idc connector   | 
    |        |with a suitable clamp. Pay attention to the direction of the|                                                                      
    |        |cables. Unbalanced IDC connector. The ribbon cable must be  | 
    |        |perpendicular to the connector.                             |
    +--------+------------------------------------------------------------+
    
-   
\ No newline at end of file
+.. table::
+   :align: center
+
+   +--------+------------------------------------------------------------+
+   |        |   .. image:: step_n_4/step_4_3.jpg                         |
+   |      3 +------------------------------------------------------------+
+   |        |Example of IDC connector mounting. The wires should run as  | 
+   |        |perpendicular as possible to the IDC connector.             |                                                                      
+   +--------+------------------------------------------------------------+   
+   
+
+.. table::
+   :align: center
+
+   +--------+------------------------------------------------------------+
+   |        |   .. image:: step_n_4/step_4_4.jpg                         |
+   |      4 +------------------------------------------------------------+
+   |        |Same for a 6 wires ribbon cable of 1 m length.              | 
+   |        |                                                            |                                                                      
+   +--------+------------------------------------------------------------+  
+
+.. table::
+   :align: center
+
+   +--------+------------------------------------------------------------+
+   |        |   .. image:: step_n_4/step_4_5.jpg                         |
+   |      5 +------------------------------------------------------------+
+   |        |Cut the ribbon cable flush with the IDC connector.          | 
+   |        |                                                            |                                                                      
+   +--------+------------------------------------------------------------+  
+
+.. table::
+   :align: center
+
+   +--------+------------------------------------------------------------+
+   |        |   .. image:: step_n_4/step_4_6.jpg                         |
+   |      6 +------------------------------------------------------------+
+   |        |Position 9 spacers above the MUX board, and 9 spacers below.| 
+   |        |                                                            |                                                                      
+   +        +------------------------------------------------------------+
+   |        |   .. image:: step_n_4/step_4_7.jpg                         |
+   |        +------------------------------------------------------------+
+   |        |Profile view for mounting the spacers above and below.      | 
+   |        |                                                            |                                                                      
+   +--------+------------------------------------------------------------+    
\ No newline at end of file