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Dual monitors for an all in one

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Trying to hook up another monitor to my all in one.  The 2nd monitor mirrors my computer.  It does not show their is another monitor added.  Resolution greyed out.  How can I fix this?  Not very techy....thanks

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Welcome to HP Community


I have gone through your Post and would like to help


To assist you better please provide me with the complete Computer Model or the Product Number


You can refer to this Link: for help in locating the Product Number.

Are you trying to connect an external monitor to duplicate the screen or to extend the display?


Keep me posted

I Am An HP Employee

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