Question about RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

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Power supply adapter

Need to identify adapter jack center pin polarity for RCA DCM 325

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  • Professor S Jun 12, 2008

    OK -- there 's only one "spec". The problem arose because the polarity was not identified on the case at the jack on the back of the unit where the adapter power plug gets inserted.

  • Professor S Jun 12, 2008

    Yes the adapter is labeled clearly, but my problem is I don't know if the adapter came with the modem. And now I can tell you I just now stumbled on the answer athttp://www.thecableshoppe.com/ps.asp where it tells which cable modems are compatible with which adapters -- and gives the center pin polarity. And -- it's positive. thanks for your help.

  • Professor S Jun 13, 2008

    Thank you, this is very helpful. It's good to have independent confirmation and I appreciate the trouble you took.

  • Tim Babcock
    Tim Babcock May 11, 2010

    It isn't on the adaptor itself?



    I got the same model at home and I'm on Pacific time. I can find out by 6 pst.

  • Tim Babcock
    Tim Babcock May 11, 2010

    I can get you all the specs on that in a few hours

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  • RCA Master
  • 2,794 Answers

12VDC 750MA tip positive.

Posted on Jun 13, 2008

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