Dell PowerEdge SC 420 - Manual (Page 9)

Figure B-6. USB Connector Pin Numbers
Table B-5. USB Connector Pin Assignments
Integrated NIC Connector
The system's integrated NIC functions as a separate network expansion card while providing fast communication between servers and workstations. Figure B -
7 illustrates the pin numbers for the NIC connector and Table B -6 defines the pin assignments for the connector.
Figure B-7. NIC Connector
Table B-6. NIC Connector Pin Assignments
Network Cable Requirements
The NIC supports a UTP Ethernet cable equipped with a standard RJ45-compatible plug. Observe the following cabling restrictions.
l Use Category 5 or greater wiring and connectors.
l Do not exceed a cable run length (from a workstation to a hub) of 100 m (328 ft).
For detailed guidelines on operation of a network, see "Systems Considerations of Multi-Segment Networks" in the IEEE 802.3 standard.
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Pin Signal I/O Definition
1 Vcc N/A Supply voltage
2 DATA I Data in
3 +DATA O Data out
4 GND N/A Signal ground
Pin Signal I/O Definition
1 MX1+ O Data out (+)
2 MX1– O Data out (–)
3 MX2+ I Data in (+)
4 MX3+ N/A No connection
5 MX3- N/A No connection
6 MX2– I Data in (–)
7 MX4+ N/A No connection
8 MX4- N/A No connection
NOTICE: To avoid line interference, voice and data lines must be in separate sheaths.