... for Speaker Mode (Playback Only) or Headset Mode (Playback +Recording)For Headset Mode, USB Audio Function Topology has 2 Input ... Terminals, 2 Output Terminals, 1 Mixer Unit, 1 Selector Unit, and 3 Feature UnitsJumper Pin for Mixer ... Speaker Mode, USB Audio Function Topology has 1 Input Terminal, 1 Output Terminal, and 1 Feature UnitSupport One Control Endpoint, One Isochronous ...