The Yealink USB QD Trainer Cable is a professional-grade accessory developed to facilitate effective agent training and monitoring in call centre operations. Specifically engineered for use with Yealink Quick Disconnect (QD) headsets, this cable enables two headsets to be connected to a single PC simultaneously. This configuration allows both the supervisor and the agent to be present on the same call, creating a practical and controlled environment for real-time training and quality assurance. The Yealink USB QD Trainer Cable is particularly valuable in high-volume customer support or sales operations where maintaining call quality and consistency is critical. Supervisors can choose to engage in the conversation or remain muted to monitor interactions, depending on the training objective. The design also supports dual functionality by serving as a USB to QD adapter, with a shorter lead on the supervisor’s side to clearly distinguish the roles of each user. The Yealink USB QD Trainer Cable supports operational efficiency by simplifying headset connectivity while contributing to structured coaching and skills development. It is a dependable tool for organisations aiming to uphold service standards through guided call handling and team supervision. With its straightforward integration into existing systems, the Yealink USB QD Trainer Cable reinforces Yealink’s commitment to practical and scalable communication solutions.