+`Fa0` commonly refers to a Fast Ethernet [network interface](/wiki/Network_interface) identifier, often seen on networking hardware like routers and switches. This designation typically points to the first Fast Ethernet port (interface 0) on a [device](/wiki/Network_device), capable of transmitting data at 100 megabits per second.
+## See also
+- [Ethernet](/wiki/Ethernet)
+- [Router](/wiki/Router)
+- [Switch](/wiki/Switch)
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