Computer Personal Computer User's Manual

Depending on the type of cables used in the Ethernet network you’re
connecting to, you may need to purchase an Apple Ethernet media adapter
or other compatible media adapter to connect your Macintosh to a network.
(Consult the service and support information that came with your computer
for instructions on how to contact an Apple-authorized service provider or
Apple for more information on Apple Ethernet media adapters.)
To use Ethernet, you need to change the network connection in the Network
control panel. (For instructions on how to select a network connection and
other information about using your Macintosh on a network, see the
“Networks” topic of Macintosh Guide, available in the Guide [h] menu.)
IMPORTANT Your Macintosh supports EtherTalk Phase 2 (AppleTalk Phase 2
Protocols for Ethernet networks) and TCP/IP (via the TCP/IP protocol) but
not EtherTalk Phase 1 (AppleTalk Phase 1 protocols for Ethernet networks).
To use TCP/IP, you must set up the MacTCP control panel. (See the
“Networks” topic of Macintosh Guide, available in the Guide [h] menu, for
instructions on how to make a TCP connection.) Non-Apple products that you
can use to communicate over Ethernet using protocols are also available.
Note: The use of an Ethernet card will make your Macintosh a Class A
computing device, according to FCC regulations.
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Appendix D