Roland EDIROL UM-3EX Mode D'emploi page 55

Operating system becomes unstable
Operation becomes unstable when the computer is started up with the UM-3EX
already connected
Please start up your computer with the UM-3EX disconnected, and then connect the UM-3EX. On
a computer that uses a USB keyboard, starting up the computer with the UM-3EX already
connected may cause operation to become unstable. In this case, start up the computer with the
UM-3EX disconnected, and then connect the UM-3EX.
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