Ideal travel companions, USB-powered HP Notebook Speakers are big sound in an ultra-compact and versatile package for both MACs and PCs, everywhere you go.n- For clear and crisp sound, HP Notebook Speakers deliver big with an ultra-compact package. Featuring a signal-to-noise ratio of 78 dB you won't miss a thing.n- Never leave your sound at home. Ultra-compact - at under 7.6 cm's - and so lightweight, they can easily fit into your computer bag or backpack.n- Cut the cord clutter and turn on the sound. Simply plug into your USB port and enjoy immediate power without cables getting in your way. With no installation CD or software drivers required, it's sound straight out of the box – on both PCs and MACs.n- Travel light with your protective travel case so you can always enjoy great sound on the go.n- Big sound that's easy to carry. Small and lightweight for easy portability, HP Notebook Speakers let you stay mobile with minimal effort.