【Confirm Before Purchase】 ①This speaker is not compatible with monitor(screen)/TV/TV-Box/Projector/Xbox/PStation. ②No microphone & headphone jack. ③Make sure your pc has a 3.5mm audio & USB-A ports. ④There is no light switch, the blue light on the speaker will remain on unless the pc is turned off 【Stereo Sound & Noiseless】 Our computer speakers adopt the 6W large full-range drivers technology. Delivers immersive stereo sound for breathtaking audio when you enjoy the movies, videos, music and games. Please note that due to the limitations of the cavity, our bass effect cannot compare with speakers equipped with subwoofers 【Wide Compatibility】 This desktop speakers supports most of the devices with 3.5mm AUX audio & USB-A ports, such as computers, desktops, laptops, PCs. Matches with most computer's operating systems, such as Windows, Unix, Linux and NetWare etc. Please connect this speaker to the USB-A port and the 3.5mm audio jack on the back of your computer tower (not the monitor) 【Plug and Play】 Our laptop speakers need to plug the USB-A cable and 3.5mm audio cable simultaneously when using, without driver or software. Powered by 49.6'' usb cable, avoid the trouble of recharging. If you find the speaker volume too low, please simultaneously adjust both the pc and multimedia volumes to above 85% 【Classic & Stylish Design】 Features a low-profile unibody speaker design, perfectly placed under your computer screen. Volume knob on the front makes it easier to control the volume. Rotate the volume button from left to right to increase the volume from mute to maximum, speakers size: L 12.4'', W 2.2'', H 2.4'' 【After-Sales Service】 Please make sure your computer's sound card audio drivers are up to date, and that its USB-A and 3.5mm audio ports are working properly. Then check your audio settings and volume control panel, and select the correct playback device. We will provide satisfactory after-sales service for every customer! Any problems please contact our support team for quick solutions