Hi Caleb,
Virtual chassis is enabled by default, but it will "not" function as a VC until you plug in a VC cable and connect the switch to another switch with VC supported. So if you've removed the VCP cables and deleted the VC configuration from the box, you can use it as a single switch right now.
There will be no difference when you see VC is enabled on a standalone EX, that's just a default behavior that any EX/QFX is VC ready .
Hope this helps.
Regards,
-r.
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