Network hardware interfaces pinouts  > Cisco pinouts
9 Pin Signal
1 Receive (-)
2 Ground
3 +5V
4 Ground
5 Transmit (-)
6 Receive (+)
7 Ground
8 Ground
9 Transmit (+)



9 pin D-SUB female connector layout
9 pin D-SUB female connector
at the cisco router
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Source(s) of this and additional information: (DB-9 -- Token-Ring)
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