EPOS I SENNHEISER ADAPT 165T USB II - ADAPT 100 Series - headset - on-ear - wired - 3.5 mm jack, USB-A - black - Certified for Microsoft Teams, Optimized for UC. Wired, double-sided headset with 3.5 mm jack USB connectivity. Work your way with a stylish, comfortable headset designed for the demands of a hybrid workplace with excellent stereo sound.