Configure X windows with both keyboard and USB barcode reader

Greetings.
Seeking guidance on adding a USB barcode reader (BCR) to an HP c3750 workstation with HP-UX 11.11 which is essentially configuring X windows to accept input from both a primary keyboard and a secondary keyboard that happens to be the BCR.

Historically, I have successfully added a BCR to an HP c3600 workstation with HP-UX 10.20 and a c3700 with HP-UX 11.11 by configuring X windows to accept input from both a primary keyboard and a secondary keyboard as stated above by adding the following lines to /etc/X11/X0devices :

Begin_Device_Description
Name    hp7lc2k.1               # USB Barcode reader driver name
Use     Other                   # This is an "Other" device
Path    /dev/hid/kbd_001        # Second keyboard device file
End_Device_Description

However, this does not work for the c3750. Adding the above lines to /etc/X11/X0devices does not appear to have any discernible effect on configuring X windows to accept input from two keyboards. A review of X windows generated logs shows no errors. X windows behaves as if no modifications where made to X0devices. The c3750 accepts input from either the primary keyboard or the BCR but not both.

Where are your X log files located?

The X log files are located in /var/X11/Xserver/logs/. A long listing of the directory looks like this:

-rw-rw-rw- 1 daemon daemon 3313 Nov 8 16:12 X0.log
-rw-r--r-- 1 root daemon 138 Nov 8 16:12 Xstartup.0.log

Again, no error info appears in either of the logs. The X0.log even contains the entry "Fri Jul 5 14:47:58 2019: /usr/lib/X11/extensions/hp7lc2k.1" conveying that the added lines to /etc/X11/X0devices resulted in the hp7lc2k.1 driver being loaded but the USB barcode reader not work together with the keyboard.