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  1. #1
    Matrox Dualhead Triplehead2go

    Member Since
    May 10, 2018
    Your Mac's Specs
    MacBook Pro (13-inch, Mid 2012) 2.9 GHz Intel Core i7
    Matrox Dualhead Triplehead2go
    Has anybody here had any luck in having the matrox DP edition adapters work on High Sierra ?

    We can see the external monitors in system preferences, but on the matrox PowerDesk App they are not detected thus there is no display output. The latest version of the app and firmware has been installed.

    Thanks In Advance !

  2. #2
    Matrox Dualhead Triplehead2go
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Keller, Texas
    Your Mac's Specs
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, High Sierra
    Really not enough information to help with the problem. Make sure you're following the Matrox guidelines given here in their examples.

    Did the adapter work OK before you installed High Sierra or is it new to you and High Sierra? You might want to address the question regarding the Matrox Powerdesk App directly to Matrox support. I haven't dealt with Matrox for quite some time (back in my Windows days) but they were always responsive to support questions back then. I'm not even sure who owns them now.

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