Ethernet Port; Figure A-4 Rj-45 Connector; Table A-8 Rj-45 Connector Pin Assignments - Silicon Graphics Origin 3900 User Manual

A: Technical Specifications and Pinouts

Ethernet Port

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The Ethernet port, which is located on the L2 controller, uses an RJ-45 connector (see
Figure A-4).
Pin 4
Pin 3
Pin 2
Pin 1
Figure A-4 RJ-45 Connector
Table A-8 shows the cable pinout assignments for the Ethernet port operating in
10/100-Base-T mode and also operating in 1000Base-T mode.
Note: The system auto-selects the Ethernet port speed and type (duplex vs. half-duplex)
when the server is booted, based on what it is connected to.
Table A-8 RJ-45 Connector Pin Assignments
Ethernet 10/100Base-T Pinouts
Pins Assignment
1 Transmit +
2 Transmit –
3 Receive +
4 Not used
5 Not used
6 Receive –
7 Not used
8 Not used
Pin 5
Pin 6
Pin 7
Pin 8
Gigabit Ethernet Pinouts
Pins
1
2
3
4
5
6
7
8
Assignment
Transmit/Receive 0 +
Transmit/Receive 0 –
Transmit/Receive 1 +
Transmit/Receive 2 +
Transmit/Receive 2 –
Transmit/Receive 1 –
Transmit/Receive 3 +
Transmit/Receive 3 –
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