After hours of searching, I found like many others that Windows fails to find the driver for my Verizon Ellipsis Tablet. Following the instructions on the support site was no help. Previous forum posts had no solution. My tablet also did not have the drivers on it for ease of install. My solution involves modifying google usb drivers for android to include these devices. I will post the answer as soon as I am allowed to do so.
I am using the Ellipsis Kids but I imagine this will also work for the 7, 8, etc.
Use the official driver if you can find it. Check the support site first.
If you cannot, you may choose to try the following for your own device at your own risk;
I added the following lines under [Google.NTamd64] and also under [Google.NTx86];
;Ellipsis Kids
%SingleAdbInterface% = USB_Install, USB\VID_0408&PID_3883&MI_01 %CompositeAdbInterface% = USB_Install, USB\VID_0408&PID_3883&MI_01 %CompositeAdbInterface% = USB_Install, USB\VID_0408&PID_3883&REV_9999&MI_01 %CompositeAdbInterface% = USB_Install, USB\VID_0408&PID_3883&REV_????&MI_01
You'll note that I made different variations of revision and you may or may not have to do the same.
You will need to use your own device hardware id's above that you found earlier (note they can be right click copied)
Save the file
Then navigate to C:\Users\.android and make a backup of adb_usb.ini
Edit the original adb_usb.ini with notepad or similar
Add the vendor ID 0x408 to the last line in the file
Save the file
Now just go to update the driver through device manager
Point it to the new usb directory you duplicated with the modified android_Winusb.inf file
Install anyways even though the publisher cannot be verified
Violla I can now download my game to the device
Once actually attempting to send somethign to your device it will request your approval