Can I use headphone jack for speakers?
If the speakers have a plug that fits a headphone jack, yes, you can. That would be a ⅛″ (3.5mm) stereo plug. If they have that plug they’re likely to be powered, either by a battery or an AC cord and plug, so as to provide amplification. If they’re not powered you won’t get enough sound out of them.
Which jack is for speakers?
Unless your computer is very old, the jacks are color-coded green for line-out — for speakers or headphones — blue for line-in and pink for a microphone. The microphone and speaker jacks may also have small images next to them. The line-in jack is intended for music players or other audio devices.
Why did they get rid of audio jacks?
Why are tech companies removing the headphone jack? Well, manufacturers say it is a matter of space – trying to make devices smaller or leave more room for larger batteries…or to make them more water proof (though you could design water proof jacks).