Touch Switch are of advance not artlessly a affluence
When a data frame enters through a port on a Touch Switch, the Ethernet Switch reads the Source MAC Address and adds that address to a MAC Address Table. This table is often referred to as Content Addressable Memory (CAM). Within the table the MAC Address is associated with the physical port on the switch to which the network device is attached. The switch now knows which port to forward data to when an Ethernet frame arrives from elsewhere in the network, because it checks the destination MAC Address, and looks for a match in the table.