HP J3188A manual RS-232 Connector and Cable Pin-Outs, Cable pin-out described below

Cables and Connectors

Cables and Connectors

RS-232 Connector and Cable Pin-Outs

RS-232 Connector and Cable Pin-Outs

The Management Module’s RS-232 port connector is wired as depicted in the following table.

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

	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.
	This appendix lists cables that have been tested and verified for use with the
	HP Hub-16M. It also includes minimum pin-out information so, if you wish to
	use an unlisted cable, you can verify that the cables used in your installation
	are correctly wired. Note that each pin-out does not necessarily match the
	pin-out for the corresponding HP cable, but cables manufactured to follow
	the minimum pin-out will function correctly.
N o t e	Incorrectly wired cabling is the most common cause of problems for LAN
	communications. HP recommends that you work with a qualified LAN cable
	installer for assistance with your cabling requirements.

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