3Com 3CRDSF9PWR-US - OfficeConnect Managed Fast Ethernet PoE Switch User Manual - page 237
Manual is about: User Guide
of
256
Ethernet Port RJ-45 Pin Assignments
237
Table 11
Pin assignments
Pin Number
10/100
1000
Ports configured as MDIX
1
Receive Data +
Bidirectional Data B+
2
Receive Data
−
Bidirectional Data B
−
3
Transmit Data +
Bidirectional Data A+
4
Not assigned
Bidirectional Data A
−
5
Not assigned
Bidirectional Data D+
6
Transmit Data
−
Bidirectional Data D
−
7
Not assigned
Bidirectional Data C+
8
Not assigned
Bidirectional Data C
−