Jabra LINK 230 USB Adapter an entry level USB adapter for your softphone applications, it's compatible with any Jabra corded headsets equipped with QD and all leading softphones. The adapter is plug-and-play with computers running Windows. Jabra Link 230 offers Digital Signal Processing (DSP) for clear audio. In addition it features Jabra Link 230 offers acoustic shock protection.
NOTE: Jabra/GN Netcom Headset sold separately
For more details see Jabra Link 230 datasheet