Edirol UA-1A Owner's Manual page 20

Connections and driver installation (Macintosh)
Making connections and installing the driver
Getting the unit to be recognized
1
Turn on the power of your computer and start up
MacOS.
2
From the Apple menu, select the
[Apple System Profiler].
fig.03-02.e
3
Click the
[Devices and Volumes]
tab control.
4
Use a USB cable to connect the UA-1A to your
computer.
5
To make sure it is successfully recognized, select
[Update all information] from the [Commands]
menu. You should see the following three audio
devices in the USB section, as shown below:
fig.03-04.e
If the indication is correct, the installation of the UA-1A driver
is successful. Select [Quit] from the [File] menu to close the
Apple System Profiler dialog, then make the sound settings
explained below.
If the indication is incorrect, you should try disconnecting the
UA-1A from the USB port, and waiting about ten seconds.
Then, do the procedure over again, starting from the step 4.
20
To prevent damage to your
speakers, turn down the
volume on this unit, and
on any audio devices you
may have connected.
Make sure to quit all
applications that may be
running before you make
the connection.