diff --git a/__pycache__/orange.cpython-312.pyc b/__pycache__/orange.cpython-312.pyc
index b1baaf8..342cbe7 100644
Binary files a/__pycache__/orange.cpython-312.pyc and b/__pycache__/orange.cpython-312.pyc differ
diff --git a/orange.py b/orange.py
index 3fbc266..bb189c6 100644
--- a/orange.py
+++ b/orange.py
@@ -1,7 +1,6 @@
 from build123d import *
 from ocp_vscode import *
 
-set_port(3939)
 
 orange = import_step("./OrangePi-Box.step")
 orange = orange.rotate(Axis.X, -90).move(Location((0, 0, 37)))
@@ -40,6 +39,12 @@ sz4o = 19.737
 offset_x4 = 70.481
 offset_y4 = 23.208
 
+# 5 otworek
+dl5o = 15.400
+sz5o = 20.400
+
+offset_x5 = 8.910
+offset_y5 = 16.720
 
 # with Locations((front_left_edge_vertex.X + 0, 0))
 
@@ -67,7 +72,13 @@ with BuildPart() as box:
         with Locations((front_left_edge_vertex.X + offset_x4, -offset_y4)):
             Rectangle(dl4o, sz4o, align=(Align.MIN, Align.MIN, Align.CENTER))
     extrude(amount=-scianka, mode=Mode.SUBTRACT)
+    back = box.faces().sort_by(Axis.Y)[-1]
+    back_left_edge_vertex = box.faces().sort_by(Axis.Y)[-1].edges().filter_by(Axis.Z).sort_by(Axis.X)[-1].vertices()[0]
+    with BuildSketch(back) as s6:
+        with Locations((back_left_edge_vertex.X - offset_x5, +offset_y5)):
+            Rectangle(dl5o, sz5o, align=(Align.MAX, Align.MAX))
+    extrude(amount=-scianka, mode=Mode.SUBTRACT)
 
 
 # show_all()
-show(box, orange)
+show(box, orange, s6)