Cisco CP-DX650 USB driver for Android ADB

Grrr!  Why doesn't Cisco make their documentation easier to find?  After days of searching, I finally found the solution.  See

https://developer.cisco.com/site/tech/communication-collaboration/endpoints/dx600/overview/

Apparently, there is a developer kit called the "Cisco DX650 Add-on".  More importantly, it has instructions on how to install the USB driver.  In case that link goes stale in the future, let me highlight the salient points:

1. Install Android SDK (duh)
2. Install the Google USB Driver (duh)
3. Edit ...\android-sdk-windows\usb_driver\android_winusb.inf
4. Add the following lines under [Google.NTx86] and [Google.NTamd64]
   ;Cisco DX650
   %SingleAdbInterface% = USB_Install, USB\VID_0451&PID_D109
   %CompositeAdbInterface% = USB_Install, USB\VID_0451&PID_D109&MI_01
   %CompositeAdbInterface% = USB_Install, USB\VID_0451&PID_D109&MI_02
5. Save and close it
6. Connect the device to your PC
7. You may need to specify the location of the driver as
   ...\android-sdk-windows\usb_driver\
8. Enjoy!