• Registered: 2010-04-16
  • Posts: 15

Topic: Fireface UCX on MacBook Air mid 2012 model

Hello All,
I'm testing a Fireface UCX, latest firmware, latest drivers, on a MacBook Air 13'' mid 2012. In USB mode it works flawlessly. In firewire mode, using the Apple Thunderbird-FW Adapter it works OK with the card's external power supply, it works but with a massive numbers of clicks and pops if I try to drain its power directly from firewire ports. I've tested only with Logic, until 96 kHz, 1024 I/O buffer size. It seems that, ad least on a MacBook Air, the power supplied by the firewire port is not enough or not clean enough. Anyone have experienced the same?
Regards,
Stefano

2 Reply by MC

  • MC
  • MC
  • Administrator
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  • From: Germany/Thailand
  • Registered: 2007-04-06
  • Posts: 25,604

Re: Fireface UCX on MacBook Air mid 2012 model

Obviously bus power of more than 7 Watts is not supported by Apple.

Regards
Matthias Carstens
RME

MC's Website

  • Registered: 2010-04-16
  • Posts: 15

Re: Fireface UCX on MacBook Air mid 2012 model

Got the point, Thanks.

Regards.
Stefano