Very simply, get a sound card that has one, and installation software for it.
green headphone jack on the back of the computer
Most computers (whether a desk-top or lap-top machine) will have a 3.5mm jack socket for a microphone input.
If it is an audio-output jack, then yes. If it is input, it can be used for a microphone. You can test this by trying headphones or speakers on the jack, this won't damage anything on your...computer?
Not without slicing open the microphone itself and doing some soldering. A USB microphone talks to the computer via a digital USB port, whereas a microphone designed to connect to a 3.5mm jack will produce an analog voltage.
It likely that you plugged your headphones into the wrong jack. There should be a jack for your headphones on your computer that has the head-phones label on it, not the one with speakers or for a microphone.
Most Likely On the back it will be green and next to a pink microphone jack Hope This Helps
A karaoke microphone is never compatible to a computer.
The trick to getting good sound in video is the microphone placement. If you have a microphone jack on your camcorder, you might consider an upgrade to a boom microphone or even a wireless system. If you don't have a microphone jack on your camcorder (most consumer models don't), you can use a solid state digital audio recorder to get the best microphone placement, and sync the sound in later when you edit the video on your computer.
Headsets which come with a microphone attached will normally come with two input jacks: a green jack and a cream-coloured jack. The green jack should be inserted into the corresponding jack input, as does the cream-coloured jack, which can be located on the back of the motherboard (if it is a Desktop computer) or on the side of the base (if it is a Laptop).
I think the answer you are looking for is MICROPHONE JACK PLUG, meaning the plug/connection that fits into an amplifier or any output socket from the microphone itself. Hope this helps
A microphone jack.
The Samson C01U is a USB microphone and cannot be used with the G12. It needs to be plugged into a computer. The Canon G12 does not have a microphone jack, so you'll need a separate audio recorder if you want to use an external microphone.