HP LaserJet 4000 Printer series - Manual (Page 134)

EN
Specifications A-17
Hewlett-Packard offers the following serial cables and adapter for
use with the printer:
With the C2909A serial cable adapter installed on the printer, you
can connect a 25-pin cable connector to the printer. The adapter
pin connections are shown below.
25 to 9 Pin Adapter (C2909A)
HP Part Number Description
C2932A 9 to 9-pin M/F RS-232 Serial Cable, 3m
C2933A 9 to 25-pin M/F RS-232 Serial Cable, 3m
C2909A 9 to 25-pin M/F Serial Cable Adapter
Standard DB-25
(female adapter end) Printer DB-9
(male adapter end)
2- Transmit Data 2- Transmit Data
3- Receive Data 3- Receive Data
6- Data Set Ready 4- Data Set Ready
7- Signal Ground 5- Signal Ground
20- Data Terminal Ready 6- Data Terminal Ready