"So how fast is USB? Our informal transfer tests found that the typical
64MB capacity player could be filled up in less than 5 minutes. The
effective transfer rate worked out to be around 210-250Kb/sec, compared to
40-90KB/sec for similar tests on units using parallel interfaces. The same
64MB capacity would require no less than 2-5 times as long (10-25 minutes)
to fill up when using a regular parallel interface. Add to that a much
slower response when shuffling and deleting files through Parallel ports,
and you can start to see the benefits of USB."
FULL STORY @ NEOSEEKER (http://www.neoseeker.com/Articles/Hardware/Roundups/usb_mp3/)