PATHDocumentation > Hardware > Original Power Mac G4 Developer Note


Ethernet Port

The Power Mac G4 computer has a built-in 10/100 Mbps Ethernet port. The actual speed of the link is auto-negotiated between the computer's PHY device and the network bridge or router to which it is connected.

The connector for the Ethernet port is an RJ-45 connector on the back of the computer. Table 3-3 shows the signals and pins on the connector. The computer does not have a connector for a fiber-optic cable.

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 Power Mac G4 computer conforms to the ISO/IEC 802.3 specification, where applicable, and complies with IEEE specifications 802.3i (10Base-T) and 802.3u-1995 (100Base-T).


© 2000 Apple Computer, Inc. – (Last Updated 13 Jan 00)