astukasastukas
Level 1 (0 points)

Q: 30" cinema display ok with mbook pro retina 15 and minidisplay dual link adapter but female usb of the adapter won't works.

hi everybody,

 

i have a 30 " apple cinema display connected perfectly to my mbook pro retina late 2014 through the apple minidisplay to dual DVI adapter.

NO problem, everythings looks amazing and works flawlessy.

 

The adaptor have a male USB, connected to the laptop to drive the Dual Dvi, and a female USB also. That female USB is not working, i imagine is intended to be connected to the usb bus of the monitor itself, to drive the usb ports rear the monitor, or for a normal usb ( first gen i presume ) purpose.

 

WIth only two usb port on the macbook i really need that port working.

ANy people with the same issue?

Logic Pro, OS X Mavericks (10.9.1)

Posted on Sep 12, 2014 2:32 PM

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astukasastukas

Q: 30" cinema display ok with mbook pro retina 15 and minidisplay dual link adapter but female usb of the adapter won't works.

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  • by Malcolm J. Rayfield,

    Malcolm J. Rayfield Malcolm J. Rayfield Sep 12, 2014 6:43 PM in response to astukasastukas
    Level 5 (7,945 points)
    Sep 12, 2014 6:43 PM in response to astukasastukas

    That port is designed for the display's USB cable.  It can't provide normal USB power because the adapter is using most of the power from the computer's USB port.  It might work for USB devices that have their own power supply and don't need to get power via USB.

     

    If you don't connect the display's USB cable you won't be able to control the brightness from the computer.

     

    If you need extra USB ports, why not use those on the display?

     

    With the display plugged in there, do the USB ports on the back of the display work?  If not, try plugging the display's USB cable directly to the computer.  If the display's USB ports now work, the adapter is defective.

  • by astukasastukas,

    astukasastukas astukasastukas Sep 13, 2014 12:24 AM in response to Malcolm J. Rayfield
    Level 1 (0 points)
    Sep 13, 2014 12:24 AM in response to Malcolm J. Rayfield

    thanks,


    yes i used that monitor on previous macbook for years with no issue at all.

    the Usb ports on the back worked perfect, powering one usb hub with connected one music controller iusb powered keyboard, one apple keyboard and mouse and also accept with no problem to charge my phine ( slowly but worked).   i tryed to plug the monitor usb on the mbookpro and works.

    so i assume that the adaptor is defective.


    UPDATE:

    -i disconnected everything for a while, turned off the apple cinema display. When i reconnected everything works!

    nice, i can stay again with that gorgeous monitor.


    thanks