Im getting a new graphics card but idk if my new pc has dual slots for it so can someone please help me?

Im buying a Nvidia GeForce GTX 570 graphics card and it says i need dual slots but idk if my new pc will have dual slots. My new pc is called a HP Pavilion Elite HPE-510t and this is what it says in the total slots section 1 PCIe (x16 graphics), 3 PCIe (x1), 2 MiniCard. Idk what that means but i need dual slots for my graphics card so if someone knows please tell me if that means dual slot.