3Com 4900 (3C17700) Getting Started Manual page 71

Table 11 Pin assignments
Pin Number
Ports configured as MDIX
1
2
3
4
5
6
7
8
10/100BASE-T
Receive Data +
Receive Data -
Transmit Data +
Not assigned
Not assigned
Transmit Data -
Not assigned
Not assigned
RJ-45 Pin Assignments
1000BASE-T
Bidirectional Data B+
Bidirectional Data B-
Bidirectional Data A+
Bidirectional Data D+
Bidirectional Data D-
Bidirectional Data A-
Bidirectional Data C+
Bidirectional Data C-
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