Does my lenovo y510p have sli?

I bought this laptop like a week ago and i don't know how to turn on sli… So when i open nvidia control panel it says set physx configuration rather than set sli physx configuration.it has windows 8.1… THE COST of the laptop was 1399 dollars.SO I just wanna know how to turn it on or does it have sli or not.
and remember the 1399 DOLLAR MODEL.