If I'm reading your question correctly, what it means is that instead of using an internal media storage such as floppy disk, media cards, thumb drives, ect., the date is saved directly to your computer via the USB port. This also allows you to transfer data to and from the GW-7, and as the info states you can update your styles sets ect. Hope I read that one right.

Squeak
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.