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Manager Port Connecting Cable
The manager port cable terminates with a 9 pin
female connector at one end and a 9-pin
male/female D-type connector or 25-pin D-type
male/female connector. The pin-out tables below
show the pin outs for both variants.
3Com end
pin no.
(9-way male
connector)
Signal Name
Pin
Links
Signal Name
Terminal
or Com
port end
pin number
(9-way
male/female
connector)
Shell
Screen
Screen
Shell
3
TxD
RxD
2
2
RxD
TxD
3
5
Ground
Ground
5
7
RTS
(not connected)
RTS
(not connected)
7
8
CTS
DTR
4
6
DSR
CTS
8
1
DCD
DSR
6
4
DTR
DCD
1
3Com end
pin no.
(9-way male
connector)
Signal Name
Pin
Links
Signal Name
Terminal
or Com
port end
pin number
(25-way
male/female
connector)
Shell
Screen
Screen
1
3
TxD
RxD
3
2
RxD
TxD
2
5
Ground
Ground
7
7
RTS
(not connected)
RTS
(not connected)
4
8
CTS
DTR
20
6
DSR
CTS
5
1
DCD
DSR
6
4
DTR
DCD
8
Rc.bk : RCAPPB.FRM Page 8 Thursday, July 10, 1997 9:53 AM