The Amazon Basics A100 Multimedia Computer Speakers are a 2.1 Channel speaker system that offers a sleek and portable design in black plastic. These speakers are powered by USB and plug & play ready for easy setup with most PCs and MACs. Featuring Dolby Digital surround sound formats, these speakers provide high-quality audio for your multimedia needs. With compatibility for both AUX and 3.5mm jack inputs, these Amazon speakers are a versatile choice for enhancing your computer's sound system.