GOgroove PC Computer USB Powered Speakers with 3.5mm AUX Input SonaVERSE O2-2.0

USB POWERED so you only need to plug in the built-in USB power cable and AUX headphone jack into your PC for a streamlined Plug-n-Play audio solution, without the need to take up an AC outlet. Plug-N-Play design powers via USB port with no external adapters required.

eBay