Question about Edirol UM-2EX External Sound System

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Not even lighting up!

I got one of these for Christmas and at first when I connected the MIDI cables of my keyboard to my macbook pro, it was a bit fidgety but eventually connected. Now when I try, the usb light goes on for a second and then dies. I tried re-connecting everything, restarting my computer and even changed the midi cable, but nothing works. Everytime the computer restarts is the only time it actually recognizes it's there. What could be going on? Is it broken?

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  • dodeweert Oct 20, 2008

    i have  a i mac and when i start my computer the um-2ex blinks for a few seconds and then it stops!

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I had the same problem -- the following worked for me:
Go into your Audio MIDI Setup application -- there should be an item in the window called "IAC Driver." Double-click it and check the box that says "device is online." If everything else is connected/set up, this should fix the issue.

Posted on Aug 01, 2009

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Posted on Jan 02, 2017

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