My used Galaxy Tab S says it has KNOX version - what does this mean?

I got a Galaxy Tab S from cowboom.com, in great condition, but the About device info shows something I never heard of:

KNOX version
KNOX 2.3
with many details that seem to indicate that this is something for enterprises

The Android version is 5.02.

I've never seen anything like this on my other devices (including 2 Samsung tablets) and couldn't quite parse the info I found about Knox. Is this something that is meant for businesses? Does it have any limitations for me (tablet owner and sole user) or anything I should know about?


I couldn't find a shortcut for it in the App drawer and actually don't even know if it's something I'm supposed to be able to control.

Thanks.

Does this mean root on Marshallow will not be as easy as ADB?

http://www.xda-developers.com/a-look...complications/

I just read this and the part that stuck out the most to me was this.

"If you want root today, on Android Marshmallow (6.0), you’re going to need to use a modified boot image."

Does this have anyone else concerned? I was excited to get back into the Nexus game so I could power on my new 6P and be rooted 10 minutes later.