You are likely looking at intel wireless card like this:
This is the wifi card that goes into laptops. Those circles are called u.fl connectors and that is what the antennas connect to.
The reason these come up when you search for bluetooth is because their radio's will pickup both wifi and bluetooth signals.
If you are using a laptop then upgrading to a 7260 or better card could be a nice inexpensive upgrade (depending on laptop depends on how easy or hard the installation is).
If you are using a desktop then just look for usb bluetooth adapter.