System Configuration : I/O Setup : Editing Paths : Renaming Interfaces

Renaming Interfaces
Audio interfaces can be renamed in the IO Setup. When you rename Avid HD audio interfaces, default path names are based on the custom name given to the interface.
To rename an audio interface in the I/O Setup:
1 Double-click the label above an interface.
 
2 Type a new interface name.
3 Click OK to save changes and close the I/O Setup.
Default Path Names
Default names for input, output, and insert paths are based on the hardware you are using for physical I/O.
For Avid HDX, Pro Tools|HD, and HD Native systems, default path names are based on the names of interfaces you are using. If you have renamed your interface, default path names are based on the custom name.