2Piece MultiMedia USB Speakers HP GL313AAABA 2Piece USB Speakers. The Multimedia Speakers from HewlettPackard offer crisp and clear stereo audio output. The speakers connect to a computer via USB and a standard 18 inch audio jack. USB provides power, while the audio jack provides sound. They are compatible with Windows and Mac OS X systems. The speakers deliver a 2channel stereo output, delivering much better sound than an internal computer speaker or notebook computer speakers. The speakers feature a dynamic bass boost to help deliver a richer sound. These computer speakers are magnetically shielded, allowing you to use them near your computer without having to worry about damaging your equipment.