Originally Posted by butman View Post
Is this official one compatible with the 8.4?

Samsung Galaxy Smart Dock Multimedia Hub >>>

I'm interested in the HDMI port and USB combo to use the tablet as a TV BOX aswell.
I have this dock and use it at work with my Note 3.

I can't speak to the MHL side, since I don't use it, but the only thing this seems to do is charge the Galaxy Tab Pro 8.4. USB accessories are not recognized by it. It's also a bit precarious when it's installed.