diff --git a/School/Analyse/Network Hardware.md b/School/Analyse/Network Hardware.md
index e722f63..16dbb42 100644
--- a/School/Analyse/Network Hardware.md	
+++ b/School/Analyse/Network Hardware.md	
@@ -5,11 +5,20 @@ Hosts are the actual clients/devices on a network.
 Examples: Computers, printers, servers, etc....
 
 ## Hubs / Repeaters
-Hubs connect hosts in broadcasting networks, they forward all messages in all possible directions. This means that hubs 
+Hubs connect hosts in [[Network Types#Broadcast network]] networks, they forward all messages in all possible directions. This means that hubs are non-intelligent.
+![[hubs.png]]
 
 ## Switches
+Switches like hubs also connect hosts in broadcast networks. Switches however forward messages in the direction of their intended receivers. This makes the switches intelligent.
+
+This property of a switch is called filtering.
+
+Switches contain a table that stores all [[MAC-Address]] of connected devices (of each port) in a table.
+
+They read the frame of a incoming message, extract the destination MAC Address and forward it to the corrisponding port on the switch
 
 ## Bridges
 
+
 ## Routers
 
diff --git a/hubs.png b/hubs.png
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