Model: N961USB interfacePerformance and advantages: 1.LED indicator shows working status. 2. Support ordinary speakers or headphones. 3. Freely switch between speaker and headphone modes. 4. Directly use the USB interface, universal plug and play. 5. Wide compatibility with USB external driver-free sound card, support TRS/TRRS mode. The USB 3.0 hub 3 ports help protect the USB ports on your computer or computer by adding two additional USB ports.Features: 2 in 1 (Microphone and Headphone)*1, Microphone*1, USB*3, Headphone*1, Supported Channel: Dual ChannelFrequency range: 15Hz - 25KHzOther functions: mute switch, volume adjustmentLine length: 22cm