32318ae4_tworking___Firewalls_Tutorials_able_4_Network_Devices_Summary_Function_Purpose
[Device] Transceiver [Key Points] A device that functions as a transmitter and a receiver of signals such as analog or digital. [Function/Purpose] 
Coverts one media type to another, such as UTP to fiber.
Networking - Firewalls Tutorials
Function/Purpose