I had the same problem as you, and I managed to solve it. I wrote a short article on my blog, but in Spanish:
http://www.hell-desk.com/android-debug-bridge-y-dispositivos-usb-no-encontrados/
I will try to write a short summary here:
Connect your honeywell device to your computer and try to get the device ID. In windows, this can be done in the device manager. The device ID is the value "0C2E" in my case.
The fact is that you must put this value in the adb_usb.ini file. Just add the value at the end of the file.
After that:
adb kill-server adb start-server
and do not execute adb to update adb, because the adb_usb.ini file will be deleted again.
After that, try to list your devices. In my case, it worked.
Hope this helps.
PS: look at the adb_usb.ini file, which you can find in the USB driver package (D7800_Android_USB_Driver_Package_v1.2). You can download them from the honeywell website. In the adb_usb.ini file you can see
[Google.NTx86] ;HSM D7800 %SingleAdbInterface% = USB_Install, USB\VID_18D1&PID_9018 %CompositeAdbInterface% = USB_Install, USB\VID_18D1&PID_9018&MI_00 %SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_9018 ;HSM D7800 %SingleAdbInterface% = USB_Install, USB\VID_**0C2E**&PID_0BA0 %CompositeAdbInterface% = USB_Install, USB\VID_0C2E&PID_0BA0&MI_00 %SingleBootLoaderInterface% = USB_Install, USB\VID_0C2E&PID_0BA0
This is the value that I can find in the device manager when I connect my d7800
R. campos
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