Help to get started with HD Native

[eduy]

Hi, i come from UAD and im a completely noob in HD systems,, so i would appreciate someone who helps me a bit to get started with hd native..

I have a pro tools standard monthly subscription, and i purchased a used avid hd native thunderbolt unit in ebay, its registered to previous owner. Protools dont see this unit, its only seeing my apollo twin, i thought i would be able to hear the mix with headphones just with this unit but pro tools dosnt recognize it.

My questions are:

• Its because its standard pro tools and in order to see the unit i need PT Ultimate?
• Its because i need something else like digilink license in my ilok?
• PT should see the core alone, or i would have to buy and plug a converter in it (like HD omni or HD io) for pro tools to recognize ir as an interface?
• PT should see it even if its registered to previous owner?

Appreciate the help!!

Thanks!