How To Use Screen Mirroring - Samsung Galaxy Tab 4

Learn how to use screen mirroring on your Samsung Galaxy Tab 4. Use the Screen Mirroring feature to share media files on your phone with an HDMI device, such as an HDMI TV.
Note: This feature requires an optional AllShare Cast dongle accessory.
- From the Settings screen, touch Connections > Screen Mirroring.
- Connect the AllShare Cast dongle to the HDMI device using an HDMI A-to-A cable.
Note
This guide will work on all Samsung Galaxy Tabs; including Samsung Galaxy Tab 4 7.0, Samsung Galaxy Tab 4 8.0 and Samsung Galaxy Tab 4 10.1.
Ok, now I understand what the AllShare Cast dongle does, etc, but I have no need for the update... It's eating too many mbs. What I can't figure out is that I have Uninstalled the update and next thing I know, its back. So then I decided to really get rid of it by uninstalling and then using Force Stop! Imagine my aggravation when, next morning... There it is, all downloaded again, and I'm creeped out!
Any ideas on how to get rid of this PIA app AllShare Cast dongle update? I DON'T WANT IT, and since my tablet has root, doesn't that entitled me to choose what gobbles up my mbs?! I'd appreciate any help, but be gentle, I'm no tech whiz. Thanks.