The Logitech Z313 Replacement Subwoofer is a reliable and high-quality computer speaker accessory designed for a 2.1 channel system configuration. With a sleek rectangular shape in black color, this wired subwoofer features a 3.5mm jack audio input and volume control for easy customization. Specifically designed for the Logitech Z313 model, this subwoofer enhances the audio experience for computers and desktops, offering a tested and working solution for improving sound quality.