The Jabra Link 400a MS DECT USB Adapter (14205-23) is a USB-A DECT dongle that connects Jabra Engage 55 wireless headsets to a PC softphone, providing the DECT-based wireless link for low-latency, reliable audio in dense office environments where Bluetooth interference is a concern. Certified for Microsoft Teams. The Telecom Spot Take DECT wireless is the preferred radio technology for contact center headsets — it operates in a dedicated 1.9 GHz band free from Wi-Fi and Bluetooth interference, delivering more reliable audio in large open-plan offices than Bluetooth alternatives. The Link 400a MS brings this advantage to the Jabra Engage 55 headset, connecting to the PC via USB-A and enabling stable wireless audio across call center floors. The Microsoft Teams certification ensures full call-control integration with Teams. DECT range typically exceeds Bluetooth in high-density environments, making it the pro choice for contact centers. Key Features DECT wireless — interference-free audio — 1.9 GHz DECT avoids Wi-Fi and Bluetooth congestion common in open-plan offices. USB-A plug-and-play — Installs in a USB-A port — no separate power needed. Microsoft Teams certified — Native Teams call-control integration. Jabra Engage 55 compatible — Designed as the DECT USB dongle for the Engage 55 wireless headset system. Technical Specifications Specification Detail SKU 14205-23 Model Jabra Link 400a MS Wireless technology DECT 6.0 (1.9 GHz) Connector USB-A male Certification Microsoft Teams Compatible headset Jabra Engage 55