HP PCI Multiplexer Family Cabling, Diagnostics, and Troubleshooting Manual

Port to Device Cabling
DB-25 Port Module
Chapter 4 43
DB-25 Port Module
DB-25 ports provide standard RS-232 DTE signals on all DB-25 female
connectors, one for each connected device (see Figure 4-1).
Figure 4-1 DB-25 port module connector orientation
The pinouts for connectors on the DB-25 port modules are identical
(Figure 4-2).
Figure 4-2 DB-25 connector pinouts