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diff --git a/docs/en/SUMMARY.md b/docs/en/SUMMARY.md
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--- a/docs/en/SUMMARY.md
+++ b/docs/en/SUMMARY.md
@@ -54,6 +54,7 @@
* [MAVROS](mavros.md)
* [Supplementary materials](supplementary.md)
* [COEX Pix](coex_pix.md)
+ * [COEX Pix](coex_pdb.md)
* [Guide on autonomous flight](auto_setup.md)
* [Hostname](hostname.md)
* [PX4 Simulation](sitl.md)
diff --git a/docs/en/coex_pdb.md b/docs/en/coex_pdb.md
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@@ -0,0 +1,13 @@
+# COEX PDB
+
+**COEX PDB** is the power distribution board used in [Clover 4 Drone kit](assemble_4_2.md).
+
+## Port pinouts
+
+### Top
+
+
+
+### Bottom view
+
+
diff --git a/docs/ru/SUMMARY.md b/docs/ru/SUMMARY.md
index 0592b71a..392078e9 100644
--- a/docs/ru/SUMMARY.md
+++ b/docs/ru/SUMMARY.md
@@ -54,6 +54,7 @@
* [MAVROS](mavros.md)
* [Дополнительные материалы](supplementary.md)
* [COEX Pix](coex_pix.md)
+ * [COEX PDB](coex_pdb.md)
* [Гид по автономному полету](auto_setup.md)
* [Имя хоста](hostname.md)
* [Симулятор](sitl.md)
diff --git a/docs/ru/coex_pdb.md b/docs/ru/coex_pdb.md
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@@ -0,0 +1,13 @@
+# COEX PDB
+
+**COEX PDB** (Power Distribution Board) – плата распределения питания для квадрокоптеров [Клевер 4](assemble_4_2.md).
+
+## Схемы расположения контактов
+
+### Вид сверху
+
+
+
+### Вид снизу
+
+