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Windows 8.1 I have Dell Optiplex 780. How to connect to HDTV?

Discussion in 'Hardware' started by TarquinThyroid, Apr 28, 2017.

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  1. TarquinThyroid

    TarquinThyroid Thread Starter

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    Hello,
    See Question-title. I have USBs a male 9-pin VGA output, a display port, and another narrow slit port (not HDMI) I've tried a Display port to HDMI cable into TV but no joy. when I click on "device managers" I have three ports: Com1, ECP printer (LPT1) and Intel Active mangament technology SOL (COM)3

    my TV is a Samsung HD with two HDMI ports. a 15 hole female VGA, and 2 scarts. I would be happy to get only visual to TV at the moment but how? Regarding audio, let's leave that for another time.

    I tried calling Samsung but lines were busy: I'll try again. Any help appreciated.
     
  2. cwwozniak

    cwwozniak Trusted Advisor Spam Fighter

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    Chuck
    Hi TarquinThyroid, and welcome to TSG.

    I am unable to find any information on Dell Optimex computers. Do you perhaps have a Dell Optiplex 780 computer?

    If so, a simple passive Display Port to HDMI cable will not work for you. That type of cable only works with devices that have a dual mode Display Port (DP++) output. Per the following page on a Dell forum, Optiplex computers do not support DP++ outputs. You would need a powered Display Port to HDMI adapter or active cable to make the conversion.

    http://en.community.dell.com/support-forums/desktop/f/3515/t/19497378

    Do you have a basic passive Display Port to HDMI cable or an active Display Port to HDMI converter cable?

    The 9 pin connector on your computer is most likely a serial port. If it is an Optiplex 780, there should also be a 15 pin VGA female connector on the back. That should work with a suitable VGA cable to connect to the VGA port on the TV.
     
  3. TarquinThyroid

    TarquinThyroid Thread Starter

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    Thanks for help. Yes sorry: it is Optiplex.
    I've tried searching with words,"Powered displayport to HDMI adapter," but the word "powered" doesn't appear. However on ebay I have seen ,
    "4K Active Displayport to HDMI Adap cable Eyefinity for surface pro AC448." will that be oK? It's cheap at £7.50 and free p&p. On Amazon the adaptors are more expensive. If you are not sure about that one can you please tell me of a specific one that you know will work?
     
  4. Triple6

    Triple6 Moderator

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    Rob
    The Surface tablets have a mini-DisplayPort port, you want a full sized DisplayPort to HDMI Active Adapter.
     
  5. cwwozniak

    cwwozniak Trusted Advisor Spam Fighter

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    Check the adapter's photos, product description, or specifications. It should have some type of power input connector. It may be a USB port of some type (typically mini-USB) or a round connector with center pin. If there is no information saying the unit needs an external power source, there is a very good chance it is a passive cable or cable adapter that will only work with a Display Port DP++ signal source. If it is USB powered, your computer may be able to supply the power with a suitable USB cable that may or may not be supplied with the adapter.
     
  6. lynx1021

    lynx1021

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