English
Quick Start Guide     
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Installation Instructions for Mac OS X
1.   We recommend that you download the most recent ProFire Lightbridge 
drivers by going to the Support > Drivers page at www.m-audio.com.  
This ensures that you have the newest drivers available.  If you do not 
have Internet access, insert the FireWire Series CD-ROM into your 
computer to install the drivers that came with the interface.
    a.   If you are installing drivers from the FireWire Series CD-ROM, 
a CD-ROM icon will appear on your desktop once  the disc is 
inserted into your computer.  Double-click this icon to view the 
contents  of  the  disc.    Next,  double-click  “Open  Me.”    Finally, 
select your product from the drop-down menu on the welcome 
screen and click “Install.”
    b.   If  you  are  installing  drivers  from  www.m-audio.com,  the 
downloaded  file  should  automatically  mount  and  display  its 
contents on the desktop.  If this file does not mount automatically, 
simply double-click the file once it has finished downloading to 
view its contents.  Next, double-click the installer application.
2.  Follow the driver installer’s on-screen instructions.
3.   When the installer has completed the installation, a prompt will appear 
stating that you must restart your computer.  Restart your machine.
4.  Shut down your computer.
5.   Connect the interface to an available FireWire port using the provided 
6-pin cable.
6.  Turn on ProFire Lightbridge first, then turn on your computer.
ATTENTION: Connect and disconnect your ProFire 
Lightbridge  only  when  your  computer  is  powered 
off.    Hotplugging  may  have  adverse  effects  on 
the  interface,  your  computer,  or  both.    For  more 
information about this issue, please visit the M-Audio 
knowledge base at www.m-audio.com.
Connecting Your Analog Equipment
In  addition  to  its  34  channels  of  digital  I/O,  ProFire  Lightbridge  provides  a 
1/4”  headphone  monitoring  output  and  a  pair  of  balanced  1/4”  analog  line 
outputs  for connection to a mixer  or powered  monitors.  The headphone  and 
line outputs always carry identical signals and bring the interface’s total number 
of independent outputs to 36. 
Since the ProFire Lightbridge interface’s analog outputs can either mirror the 
S/PDIF outputs or be available as an independent pair of outputs in your DAW, 
you may need to make appropriate changes within your audio software to make 
sure the correct signals are being routed to the analog outputs.  Please consult 
your DAW’s documentation for instructions on this.