Headphones with one 3.5 mm jack use it to connect to both the mic and speakers. Headphones with mic with one jack can truly broaden your sound experience and give you the chance to take full of gaming. Single jack headphones are typically used with Chromebooks, iPads, new laptops and tablet PCs. Since many laptops have built-in microphones, you might not need to set up an external microphone; however, if your built-in mic is faulty you might need to connect an external one. Coming to your concern, how to use headset mic on pc with one jack without any further delay. This wikiHow will show you how to use an external microphone on a laptop. Table of Content: Headphones with Microphone with One or Two Jacks Why You Should Choose the Type with Only One Jack How to Use Headphones with Microphones with One Jack in Laptop or PC Recommendation of Arkartech Headphones ArkarTech v3 Stereo Gaming Headphones ArkarTech V1 Stereo Gaming Headphones ArkarTech N11 All Platform Gaming Headphones Your PC most likely … On the other hand, headphones with two 3.5 mm jacks use one jack for connecting the mic and the other for connecting the speakers. Examine the jack on the microphone. Both of these jacks have corresponding ports on most computers. Generally, most basic computer microphones will have one of two varieties of jack: an 1/8" TRS jack, which is essentially the same kind of jack you would find on a pair of headphones, or a USB jack, which is flat.