DescriptionThe HP  High-quality Stereo Speaker deliver a clean and accurate sound. They are  USB powered and does not require an external power supply. With RGB  backlighting.FeaturesHigh-quality speakers deliver a clean and accurate soundUSB powered, does not require an external power supplyActive electronic equalization balances low, mid and hlgh frequencies for more natural tone and clarity.These  USB speakers make for an easy setup. Connect the USB plug to to the  port on your computer and the 3.5rrm to the headphone jack The speaker has an influence peak output of 12W RMS to ship optimum efficiency and top of the range sound.Specifications               Rated power2 x 3WFrequency response200 Hz - 16 KHzDrive unit2" x 2Connectors3.5 mm jack (audio), USB (power)Power supplyUSBSize77x174x91 mm