External Digital Stereo Audio PC Microphone Adapter with Array 2-S Microphone Bundle.  

Product Features:

• Stereo USB Microphone Audio (SUMA) adapter is designed to support the Array 2-S Stereo Microphone input only.
• SUMA stereo microphone input supports sample rates up to 48K for high quality voice input.
• Patented audio enhancement software download available for purchase from Andrea Electronics Corporation (not recommended for use with voice recognition software including Dragon): http://www.andreaelectronics.com/acl/audiocommander.html