USB drive-free external sound card for enhancing the audio experience of your computer. Features a three-hole output design with a two-in-one headset and separate headphone jack, allowing two users to connect simultaneously. Supports microphone and audio connections, ideal for family karaoke, online gaming, video conferencing, and chat applications. Includes an external volume control knob for easy adjustment and dedicated mute switches for headphone and microphone, ensuring convenient and uninterrupted use. Compatible with both TRS and TRRS modes, works with most headphones and converts analog signals from tablets, laptops, desktops, and audio devices into digital output. Product Name: USB Multi-Function External Sound Card Input Interface: USB 2.0 Output Connections: Microphone interface, headphone interface, 4-pin headset composite interface Signal-to-Noise Ratio: 80dB Headphone Indicator: Blue Microphone Indicator: Red (lights up when active) Other Features: Mute switch, volume control Supported Systems: Windows, macOS, Linux Cable Length: 10cm Material: ABS Color: Black Package Contents: 1 x Sound Card Note: The package includes only the items listed above. Other accessories shown are not included. Due to lighting effects and monitor settings, the actual color of the item may vary slightly from images. Measurement may vary by +/- 1-3cm.