Grace Design A108DL - Pro Tools DigiLink Option Card for m108 (Field Installed)he optional A108DL Digilink module allows the m108 to connect to Avid Pro Tools HD Accel, Pro Tools HDX, and Pro Tools HD Native interfaces. The A108DL module emulates the Avid HD I O interface and features two Mini Digilink connectors. One is labeled PRIMARY PORT and one is labeled EXPANSION port. The concept of these ports is similar to those on an Avid HD interface. However, since the m108 is an 8 channel input and 2 channel output device, these