Ethernet Port Rj-45 Pin Assignments - 3Com 4500 Getting Started Manual
Switch 4500 family 26/50-port
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- Manual (942 pages) ,
- Configuration manual (742 pages) ,
- Getting started manual (134 pages)
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60
A
A: P
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PPENDIX
IN
OUTS
Ethernet Port RJ-45
Pin Assignments
Switch 4500
Cable connector: RJ-45 female
Screen
TxD
RxD
RTS
CTS
DSR
Ground
DCD
DTR
10/100 and 1000BASE-T RJ-45 connections.
Table 10 Pin assignments
Pin Number
10/100
Ports configured as MDI
1
Transmit Data +
2
Transmit Data –
3
Receive Data +
4
Not assigned
5
Not assigned
6
Receive Data –
7
Not assigned
8
Not assigned
Table 11 Pin assignments
Pin Number
10/100
Ports configured as MDIX
1
Receive Data +
2
Receive Data -
3
Transmit Data +
4
Not assigned
5
Not assigned
6
Transmit Data –
7
Not assigned
8
Not assigned
Shell
3
2
7
8
6
5
1
4
1000
Bidirectional Data A+
Bidirectional Data A-
Bidirectional Data B+
Bidirectional Data C+
Bidirectional Data C-
Bidirectional Data B-
Bidirectional Data D+
Bidirectional Data D-
1000
Bidirectional Data B+
Bidirectional Data B-
Bidirectional Data A+
Bidirectional Data A-
Bidirectional Data D+
Bidirectional Data D-
Bidirectional Data C+
Bidirectional Data C-
RS-232 Modem Port
Cable connector: 25-pin male
1
Screen
2
TxD
3
RxD
4
RTS
5
CTS
DSR
6
7
Ground
8
DCD
20
DTR
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