(1) New Plantronics USB to female 2.5mm adapter    for   your own headset with 2.5mm sub-mini plug   such as   converting Plantronics M214C & MX500C   to   Plantronics M214i & MX500i   for direct connect to   your computer USB port           P   Plantronics P/N 84640-01 Plantronics USB to Female 2.5mm Adapter P/N: 84640-01 Manufacturer: Plantronics - USB to Female 2.5mm Adapter Item Weight: 1 lbs   - Dimensional Shipping Weight: 1 lbs       Item Information: You are bidding (1) new Plantronics USB to female 2.5mm adapter    Compatible with: USB computer ports and 2.5mm headsets 　 Item Descriptions: USB to Female 2.5mm Jack Adapter. 84640-01 Plantronics USB to female 2.5 mm Audio Adapter for MX500i & M214i   Plantronics USB Audio Adapter Product Type: Audio Adapter Connector on First End: USB Connector on Second End: Sub-mini phone Female Audio Adapter Type: USB/Sub-mini phone Payment & Shipping: *Our start bid price for (1) Plantronics USB to female 2.5mm adapter is $29.50 each.    *Bid with confidence. For any question about the item, please feel free to contact me. *Please visit my other items on eBay. *This item will be shipped to buyer from my fulfillment house with tracking number.