The term condenser is actually obsolete but has stuck as the name for this type ofmicrophone, which uses a capacitor to convert acoustical energy into electrical energy. Condenser microphones require power from a battery or external source. The resulting audio signal is stronger signal than that from a dynamic.
Simply plug the USB jack into one of these ports. Laptops and some more contemporary computers don't have microphone ports, because they're generally outfitted with internal microphones. It's usually possible to plug into the headphone port on most computers, however, and adjust your sound settings later