The external sound card has its own audio chip, which can transfer USB port to multiple 3.5mm . so it can connect 3.5mm audio devices such as headphones, headphones, speakers, microphones, etc. Supports single plug and dual plug headphones at the same time, no adapter is required. Stereo Sound Adapter: It prevents electromagnetic interference and is also suitable as a second source for simultaneous operation of speakers and headphones. Wide compatibility: Compatible with all common systems. Plug and play, no drivers required. Mixing function: The mixer function can adjust the output electronically. The function keys include microphone mute, speaker mute and volume up/down wheel. Mini LEDs and surround sounds increase the level of game audio. Two headphone jacks with microphone jack for all your external sound card adapters. Details： Headphone jack: 3.5mm*1 Microphone interface: 3.5mm*1 Four pole single plug interface: 3.5mm*4PIN *1 USB interface: 2.0 extension *3 Frequency response range: 20Hz - 20KHz Total length of the headphone cable: 1.2±0.1M Package included: 1 x sound card Only the above package content, other products are not included. The female voice became a male voice.