First published on MSDN on Jul 29, 2015
Authored by George Roussos [MSFT] The Serial Communication protocol is everywhere; it is broadly available, easy to learn, and low cost. It is use...
Updated Oct 16, 2018
Version 3.0
Blog Post
Hi,
barcode scanners from Honeywell do support CDC-ACM and usbser.sys.
To use usbser.sys ensure you do not install the driver from the Honeywell website. This is a custom driver.
In DevMan you can see which driver is used. Usbser.sys uses names like "Usb Serial Device (COM3)", while the Honeywell driver uses names like "Xenon 1900 (COM3)".
I also search for other devices fro cross testing. Found that the selective suspend does not work as described in this document:
https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/usb-driver-installation-based-on-compatible-ids
IdleUsbSelectiveSuspendPolicy = 0x00000001
does actually behave as described with 0x00000000 (only SS if port is closed).
Planning on sending a bug report again (did sent 2 years ago, but was lost in MS).
Dieter Fauth