3Com 2426-PWR, 2226-SFP, 2250-SFP manual Ethernet Port RJ-45 Pin Assignments, Pin Number 10/100 1000

Ethernet Port RJ-45 Pin Assignments

Table 2 RJ-45 MDI Pin Assignments

Pin Number	10/100	1000
Ports configured as MDI
1	Transmit Data +	Bidirectional Data A+
2	Transmit Data -	Bidirectional Data A-
3	Receive Data +	Bidirectional Data B+
4	Not assigned	Bidirectional Data C+
5	Not assigned	Bidirectional Data C-
6	Receive Data –	Bidirectional Data B-
7	Not assigned	Bidirectional Data D+
8	Not assigned	Bidirectional Data D-

	Ethernet Port RJ-45 Pin Assignments		89
Table 3 RJ-45 MDIX 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 D+
5	Not assigned	Bidirectional Data D-
6	Transmit Data -	Bidirectional Data A-
7	Not assigned	Bidirectional Data C+
8	Not assigned	Bidirectional Data C-