URI for USB-connected Samsung CLX-4195 multifunction printer

[Intense Red <intnsred@golgotha.net>]

   I had this working but now after a Linux reinstall I cannot get it to work 
again. :-(

   Using Samsung/HP's proprietary driver package at (https://support.hp.com/
us-en/drivers/selfservice/samsung-clx-4195-color-laser-multifunction-printer-
series/16462344)  the driver installs the printer into CUPS.

   system-config-printer's  GUI shows a CLP-300 printer added; everything looks 
cool so far -- but it doesn't work. system-config-printer shows the printer's 
device URI is "mfp:/dev/mfp4" but under /dev there is no mfp* devices.

   As I remember, the previous working printer config used a URI of "USB-
something" indicating that the printer was connected via a USB cable (which it 
is).

   So my question is: How do I detect a printer connected via USB? What is the 
USB URI for such a printer?


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when there's not." -- Bill Gates, Fortune Magazine, July 17 2007.