Designed for 3.5mm jack devices and virtual 7.1 channel devices (like headphones, earphones, or microphones) that stop working or have issues with output connection/disconnection. The USB headset adapter is also suitable for the sound card of your computer/notebook/desktop to disconnect or lose connection with the motherboard. You can also use our products on iMac/Mac Mini devices simultaneously to use microphones and headphones. Makes the sound louder than the computer can, creates a surround sound effect, and gives you a dreamlike feeling. The USB audio adapter supports standard stereo, in-ear headphones, in-ear earphones, 3.5mm jack headphones or microphones, Raspberry Pi 2/3 Xbox PS4 Surface tablets, and is especially suitable for gaming headsets. The USB sound card is easy to use and requires no additional drivers. Plug and play, instant audio playback. The microphone/headphone mute design allows headphone and speaker modes to be switched freely without disconnecting anything from the computer. Output audio sound can be adjusted with the volume adjustment knob. The mixer function can electronically adjust the output level. Function keys include microphone mute, speaker mute, and a scroll wheel to increase/decrease volume. Mini LED indicator and surround sound can enhance the level of game audio. Two headphone jacks and one microphone jack can meet all your needs for external USB sound card adapters. The external USB 2.0 sound card adapter is compatible with all common operating systems, such as Windows 7/8/XP/10/Vista, Linux, Mac OS, etc. Its lightweight and portable size makes it easy to use and carry.