Connectors: USB Type-A, Stereo output jack, Mono microphone-input jack. Plug and play:USB powered, no external power required. Built-in noise reduction chip, to avoid electromagnetic interference and make the sound clearer. Wide application:Designed for 3.5mm jack and virtual 7.1 channel devices like headphones, headset or microphones that stop working or have issues with output cutting in and out. USB headset adapter is also suitable for sound card in the computer/laptop/desktop that dying or losing connection with motherboard.