5990-3760 Copyright 2006 Hewlett-Packard Development Company, LP 43
APPENDIX A. CONNECTOR PIN DEFINITIONS
The following tables provide the pin assignments for the base unit, interface modules, and backup
modules.
Base Unit Pinouts
Table A-1. CONSOLE Port (DTE) Pinouts
Pin Name Description
1—Unused
2 RD Receive Data (input)
3 TD Transmit Data (output)
4 DTR Data Terminal Ready (output)
5 SG Signal Ground
6 DSR Data Set Ready (input)
7 RTS Request to Send (output)
8 CTS Clear to Send
9—Unused
Note
Direct connection to an external modem requires a straight-through cable.
Table A-2. 10/100BaseT Ethernet Port Pinouts
Pin Name Description
1 TX1 Transmit Positive
2 TX2 Transmit Negative
3 RX1 Receive Positive
4, 5 — Unused
6 RX2 Receive Negative
7, 8 — Unused
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