MIDI from USB A port?

[corvair60]

Possible to use both USB port A and USB port B for midi? ie would be nice to trigger iPad with one port (Garageband instruments) and laptop softsynths with the other.

Doesn't "look" too good tho......
From manual:
"6. USB
USB A connector (for connecting a CD-R/RW drive,
etc.)
You can connect an external USB device to this connector.
Use this connector to connect storage media such as a
hard disk, MO, or CD-RW drive. (☞PG p.325)
USB B connector (for connecting to a computer)
You can connect your computer to this connector. This lets
you use your computer to access data on the TRITON
Extreme's CompactFlash (Microdrive) card. This connection
also lets you send and receive MIDI data between the
TRITON Extreme and your computer. (☞PG p.325)"