User`s guide

User's Guide Fireface UFX © RME
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31.2 Class Compliant Mode under Windows and Mac OS X
On a Windows PC, Class Compliant mode is indicated by a missing “RME“ in the device name
shown in the Device Manager. In the correct mode and with installed drivers, the full name in-
cluding RME is shown, without serial number.
Windows does not support USB Audio 2.0 directly. The UFX will be detected, but automatic
driver installation will fail. This is important to remember. Connecting it to the PC one day after
having it used with the iPhone/iPad one might forget that it is still in CC mode. You might end up
with hours of wasted time trying to repair your driver installation – when all you need to do is set
the unit back to normal mode.
Mac OSX supports USB Audio
2.0, even with more than 2
channels. The UFX offers 22 input
and 22 output channels at up to
96 kHz. It is shown as “Fireface
UFX (xxxxxxxx)“ in the Audio MIDI
Setup, in both normal and CC
mode. In CC mode the USB
Settings will vanish from the Dock,
and TotalMix will – if at all – show
a ‘disconnected’ UFX.
The Audio window in the Audio
MIDI Setup lists two available
modes: 2 channels and 22
channels. The sample rate shown
here as ‘Default’ is the one set at
the UFX.
Alsa (Linux) does not work with USB 2 Class Compliant interfaces at this time, but it seems it
can be fixed (recompiled) to do so. More information is available here:
http://www.mail-archive.com/[e-mail]/msg28901.html