Pin-Out For Hub's Rs-232 Port Connector - HP AdvanceStack 10Base-T Hub-12 Installation And Reference Manual

Distributed Management
RS-232 Connector and Cable
Pin-Outs
The hub's console connector is wired as if it is a terminal (DTE), ready
to be connected to a modem (DCE). The HP AdvanceStack 10Base-T
Hubs include a null modem cable that can be used to directly connect a
PC to be used as the console. To connect a modem to the hub, use a
standard RS-232-C modem cable.
This section provides pin assignment information for the cables you can
use on the hub's Distributed Management RS-232 port.

Pin-Out for Hub's RS-232 Port Connector

PIN
1
2
3
4
5
6
7
8
9
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US CCITT DIN
DCD 109 M5
Rx 104 D2
Tx 103 D1
DTR 108 S1
GND 102 -
DSR 107 M1
RTS 105 S2
CTS 106 M2
RI 125 M3
Cables and Connectors
A-9