Originally Posted By hammer
Fran,
I believe there must be a design issue with the A-800 Pro power supply. The original one was a PSB-1U and it has been replaced by Roland with the PSB-120. Also, for whatever reason, Italy decided the SD90 USB ports did not need to supply a lot of power for such things as a midi controller.

Deane


The power a usb port offers is defined in the USB specs..
If the a-800 is compliant to these rules, there should be no problem.
Since the SD90 seems to use a standard usb chipset, i dont think the problem is with the sd90..
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