Connectivity
This model of headphones is designed for PCs and laptops that have 2 x 3.5mm sockets (one for audio and one for microphone). These headphones have 2 x 3.5mm jacks to connect to such devices.
Want to use these with Tablets or Chromebooks?
If you just want to hear the sound (audio) from chromebooks and tablets, then plugging in the audio jack into the device will work successfully. However, if you want to also use the microphone on tablets or chromebooks, then you will need an adapter to convert the 2 x 3.5mm jacks (audio and mic) into a single 3.5mm jack (which is known as a 4 Pole Jack)