diff --git a/School/Analyse/Layers/1. Physical Layer.md b/School/Analyse/Layers/1. Physical Layer.md
index 5d6301b..06c5540 100644
--- a/School/Analyse/Layers/1. Physical Layer.md	
+++ b/School/Analyse/Layers/1. Physical Layer.md	
@@ -124,5 +124,11 @@ Transmission mediums are often space (air), metallic cable or fiber optic cables
 Transmission media are divided in 2 groups.
 
 ### Guided media
+Guided media like cables provide a conduit from one device to another.
+I like to think of it as you can steer the signal by moving the 
+Coaxial cable, twisted pair cable and fiber optic cables.
 
-### Unguided media
\ No newline at end of file
+
+![[type-cables.png]]
+
+### Unguided media
diff --git a/type-cables.png b/type-cables.png
new file mode 100644
index 0000000..686aa74
Binary files /dev/null and b/type-cables.png differ