176 SPARC Enterprise T5440 Server Service Manual • June 2011
Gigabit Ethernet Connector PinoutsFour RJ-45 Gigabit Ethernet connectors (NET0, NET1, NET2, NET3) are located on
the system motherboard and can be accessed from the back panel. The Ethernet
interfaces operate at 10 Mbit/sec, 100 Mbit/sec, and 1000 Mbit/sec.
Pin Signal Description Pin Signal Description
1 Transmit/Receive Data 0 + 5 Transmit/Receive Data 2 –
2 Transmit/Receive Data 0 – 6 Transmit/Receive Data 1 –
3 Transmit/Receive Data 1 + 7 Transmit/Receive Data 3 +
4 Transmit/Receive Data 2 + 8 Transmit/Receive Data 3 –