Input Path selectors determine the source input for audio, Auxiliary Input, and (optionally) Instrument tracks. Track inputs can be set from hardware inputs or internal bus paths or subpaths. For detailed information on assigning track inputs, see “Assigning Audio Inputs (Audio, Auxiliary Input, and Instrument Tracks)” on page 99.

You can also define what physical ports are routed to Pro Tools input ports in the Hardware Setup dialog. For more information, see “Configuring Pro Tools | First System Settings” on page 29.