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Ethernet Port

The iMac family computers have a built-in 10/100 Mbps Ethernet port. The user can connect it to either a 10Base-T or a 100Base-TX hub; the port will automatically sense which type of hub is connected.

The connector for the Ethernet port is a an RJ-45 connector located on the I/O panel. Table 3-3 shows the signals and pins on the connector.

Table 3-3 Signals on the Ethernet connector

Pin

Signal name

Signal definition
1 TXP Transmit (positive lead)
2 TXN Transmit (negative lead)
3 RXP Receive (positive lead)
4 - Not used
5 - Not used
6 RXN Receive (negative lead)
7 - Not used
8 - Not used

The Ethernet interface in the iMac computers conforms to the ISO/IEC 802.3 specification, where applicable.

© 1999 Apple Computer, Inc. – (Last Updated 26 Oct 99)

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