Please HELP: Motorola cable box won't play nice with 27" iMac miniDP IN port!?

Discussion in 'iMac' started by Crunch, Aug 28, 2010.

  1. Crunch macrumors 6502a


    Jun 26, 2008
    Crazy L.A.
    hi all. I really hope someone can help me with this. I gave my HDTV away to a friend in need so for now, I'd like to use my new iMac as a pseudo-TV. The mini DisplayPort on the 27 inchers allows for both audio and video to flow both IN and out of the iMac, so what do I need in order to get this working? What kind of software will I need to use?

    I'm connecting the cable box through its HDMI port and on the other end I have attached the (quite pricey) HDMI-to-miniDP adapter. Do I still need some kind of tuner? My cable box is brand new and also has FireWire, USB, and Ethernet ports.

    How can I get this going? I did a LOT of searches, but to avail. Please help...:(
  2. xraydoc macrumors demi-god


    Oct 9, 2005
    What kind of adapter, specifically, are you trying to use?
    As far as I know, the 27" iMacs only supports direct 2560x1440 resolution input (i.e., from another iMac, MacBook, etc.).

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