This is a replacement for the short black cable that runs from the bottom of the Plantronics wireless headset tower (CS50, CS55, CS70, CS351, etc.) into your telephone. It has small modular square plugs at both ends.
IMPORTANT INFORMATION ABOUT COVID-19: Founders Telecom telecom cares deeply about the safety and health of our staff and our customers. We continue to work tirelessly with Poly (Plantronics) and all of our suppliers to replenish high-demand items like USB corded and wireless headsets. Although there were some manufacturing issues and product shortages early on, Plantronics has been getting caught up. If you have any concerns about product availability, please don't hesitate to contact us. We value your business and we're here for you during this trying time.