[...] the USB
specification. And it even appears like some vendors
are (finally!) starting to follow suit:
http://midiman.com/products/en_us/KeystationPro88-main.html
- "USB class compliant-no drivers required for
Windows XP or Mac OS X"
M-Audio started following suit only after they hung their engineers
with a USB cable and bought Evolution who had always made
class-compliant devices.
The problem here is that class compliant devices suffer bad timing
because they use bulk transfers for MIDI data. The standard for
MIDI over FireWire is much better.
--ms