Twisted-Pair Straight-Through Cable; Twisted-Pair Crossover Cable; Rs-232 Connector And Cable Pin-Outs - HP ProCurve 10Base-T 12 Installation Manual

Twisted-Pair Straight-Through Cable

Twisted-Pair Crossover Cable

RS-232 Connector and Cable Pin-Outs

The RS-232 port connector on both the HP J3301A and the HP J3303A is wired
as depicted in the following table.
Use the RS-232 port to connect a PC to be used as the console. To make this
connection, you must use a null modem cable or you can use the minimum
cable pin-out described below.
HP 10Base-T Hubs Installation Guide
Hub End (MDI-X)
Signal Pins
(receive +) 1
(receive –) 2
(transmit +) 3
(transmit –) 6
Hub End (MDI-X)
Signal Pins
(receive +) 1
(receive –) 3
(transmit +) 2
(transmit –) 6
3,1 86 &&,77
 5[ 
 7[ 
 '75 
 *1' 
 '65 
Computer or Transceiver End
(MDI)
Pins Signal
1 (transmit +)
2 (transmit –)
3 (receive +)
6 (receive –)
Computer or Transceiver End
(MDI)
Pins Signal
3 (transmit +)
1 (transmit –)
6 (receive +)
2 (receive –)
',1
'
'
6

0
B-3