8 Replies Latest reply: Feb 14, 2013 2:19 AM by jeroengroter
jeroengroter Level 1 (0 points)

Despite several calls and mails, Apple leaves me in the dark concerning problems I have with my 2012 Mac Mini. First there were the HDMI dropout problems, but now, I have lots of problems with my Wireless Keyboard, Trackpad and Mouse. They simply don't work reliably when I have my Lacie Porsche 9230 USB3 disk connected to one of the USB3 ports.


All is very clear, because when I disconnect the Lacie drive, all Bluetooth equipment works like it should again.


Apple does know about the problem (see the link to an Intel Whitepaper deeply buried on the Apple site: http://support.apple.com/kb/HT5172?viewlocale=nl_NL#15) but they refuse to offer a solution.


However, there IS a solution, and that is to shield the Bluetooth antenna with so-called EMI foil, but even if that is performed by an authorised repair centre, Apple refuses to let the guarantee intact. That could be understandable, but the thing is that they do not offer another solution.


Here you can see the shielding procedure: http://eshop.macsales.com/item/Other+World+Computing/DIYIMM12BTS/


I want Apple to acknowledge that there is a problem. Making a machine with USB3 and Bluetooth, but knowing about the fact that this conflicts, is like selling a chair you can't sit on.


Does anybody recognise this problem? Are there solutions given to people by Apple?

Mac mini, OS X Mountain Lion (10.8), Plex
  • Jeff Shenk Level 4 (2,737 points)

    Contrary to your hyperbole, the page to which you link includes Apple's solution: rearrange the placement of your equipment so that the third party USB3 device that is causing the problem is not too close to the bluetooth antenna.


    If you are unable or unwilling to do that, it's unfortunate, but Apple have clearly acknowledged the problem and explained a solution.

  • jeroengroter Level 1 (0 points)

    Hi Jeff,


    I wish it was that easy. Of course I have tried that. But it's not the device itself that causes the interference. It's the connection to the ports that gives the signal. I have placed the Lacie more than 10ft away from the Mac Mini, but no result...

  • Jeff Shenk Level 4 (2,737 points)

    Have you tried rerouting the USB cable or using a different USB port for the hard drive? Have you tried a better quality cable?


    I would suspect that, as your post implies, the interference is being picked up by the bluetooth antenna, and the OWC "solution" doesn't do anything about the antenna; it adds shielding to the module.

  • jeroengroter Level 1 (0 points)

    Tried it all. A double shielded USB3 cable and all 4 USB ports. The signal "bleeds" from the ports, interferring with the Bluetooth antenna. Thats why applying a small piece of EMI foil helps, but Apple refuses to give an ok for that handling with keeping of the guarantee.

  • Marcelo Peltier Level 1 (90 points)

    Try to connect using a USB 2.0 cable. There are issues in some USB 3.0 devices, but they use to work fine in USB 2.0 mode. I don't know if it is Apple problem or some faulty USB 3.0 to SATA controller chip.

    I have this info from http://us.toshiba.com/computers/storage/desktop/canvio-desk/read-reviews

  • RRFS Level 5 (4,490 points)

    OWC sells a shielding kit for this issue. It's only $6 but you have to take the unit completely apart.

  • jeroengroter Level 1 (0 points)

    Thanks for your reply. I know this solution and this is exactly what I want the certified repair centre to do just this, but Apple refuses to give their OK for this repair under guarantee, but they do not offer any other solution...


    This is exactly my problem...

  • jeroengroter Level 1 (0 points)

    I bought this Mac Mini specifically for the USB3. I had a 2011 Mac Mini and sold that one. So, not using the USB3 is not an option...