ELECOM PC Speakers, 3.5mm Connection, Compact, Lightweight, Easy Connection [for PCs, Smartphones, Music Players, Etc.], Black MS-P08UECBK

No power outlet needed. Convenient PC speakers. These are USB-powered speakers that do not require a household power supply. Simply connect them to your computer's USB port for easy enjoyment. With a highly versatile 3.5mm stereo mini-jack input, they can be connected to a variety of devices, not just computers. They feature a φ50mm round full-range driver for a well-balanced and stable sound. They have a built-in amplifier and come with a volume controller for easy volume adjustment. [Precautions for Use] As this is a USB-powered device, do not use it with a damaged USB port, cable, or power supply. If you notice any abnormal heat or unusual odors, stop using it immediately.