The Lot of 9-SIIG ALP1530X USB SoundWave 7.1 Pro is a set of external sound cards that provide 7.1 channels of audio through USB standard type A I/O ports. Specifically designed for use with laptops and desktop computers, these sound cards offer high-quality sound processing capabilities. Compatible with USB ports, each unit in the lot ensures reliable and immersive audio performance for various computing tasks. Ideal for enhancing audio quality in multimedia applications or for creating a surround sound experience, these SIIG sound cards are a versatile addition to any computer setup.