Super mini USB dual-channel sound card (compatible with 7.1 channels/with microphone jack)This baby high-speed USB2.0 anti-interference, no current, no noise, and drilling entity windows XP/2000/win7win8.1 also supports Apple BOOK!Drive-free: WINXP, VITST and WIN7win8.1 systems are supported, and drivers do not need to be installed;Simple operation: as long as you connect headphones or speakers, wonderful music can be enjoyed immediately! ! Small size, easy to carry.Good compatibility: USB2.0 pure digital sound output, virtual 7.1 channel processing ability (actually 2.1 channels), the effect is similar to the HD sound card integrated with the motherboard, which is much better than the integrated sound card such as AC97, with no noise, no current sound and loud microphone, especially suitable for online chat.Support ordinary speakers or headphones with microphone holes;USB interface, plug and play, replacing the traditional sound card;Multi-channel technology to achieve 7.1-channel dynamic sound effect;Dynamic rotating sound field;Free switching function between earphone and speaker mode;Analog speaker position free adjustment function;Output level adjustment;Convert analog signals (microphone and line signals of CD, MP3, TV, tape recorder, etc.) into digital signals and save their functions. Simple USB interface device, plug and play.