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jmandassociates
10-07-2008, 10:45 PM
Does anybody know how to tell the difference between an RU-503 and RU-504 if they are missing the back cover that has the model # on it. We have one that is brand new in the 2 seperate boxes but we are missing the back cover which is the only place I have seen the model # on them before. Any help with how to identify the one we have would be appreciated.

Mr Spock
10-07-2008, 11:43 PM
On the bottom of the RU-504 is a power supply that RU-503 does not have.

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