The Logitech Z313 Replacement Satellite Speaker set includes both the left and right channel speakers, offering a 2.1 channel surround sound experience. With an RMS power of 50W, these black speakers provide clear and powerful audio for your computer setup. The system features various connectivity options such as headphone jack, wired audio jack, and RCA jack for easy integration with different devices. Additionally, it includes features like volume control, headphone jack, and is AC-powered, making it a versatile and convenient choice for enhancing your audio experience.