Koss Audio Adapter (TRRS)
You don't need USB to connect your Communication Headset to a computer if your headset has separate microphone and audio plugs.
The Koss Audio Adapter features 2 x 3.5mm female jack plug (TRS) to a single 3.5mm male jack (TRRS) plug. The Koss Audio Adapter is a CTIA standard audio splitter that works with any headphone/mic setup that is base off a 3.5mm jack and features clearly labeled plugs for easy identification of mic and headphone inputs.
Below is the full-line of Koss Communication Headsets compatible with the Koss Audio Adapter (TRRS).